# Briefing Document: Mission Overview and Technical Synthesis of Apollo 11 ## Executive Summary Apollo 11 was the first crewed lunar landing spaceflight in human history. Operated by the National Aeronautics and Space Administration (NASA) and launched atop a Saturn V rocket on July 16, 1969, the mission successfully placed astronauts Neil A. Armstrong and Edwin "Buzz" E. Aldrin Jr. on the lunar surface on July 20, 1969, while Command Module Pilot Michael Collins maintained lunar orbit. The mission achieved the primary national goal established by President John F. Kennedy in May 1961: to land a man on the Moon and return him safely to Earth before the end of the 1960s. Key findings and critical takeaways from the mission context include: * **Geopolitical and Strategic Success:** Apollo 11 brought the Space Race—a critical technological competition between the United States and the Soviet Union during the Cold War—to its culmination. Parallel Soviet efforts, such as the uncrewed sample-return probe *Luna 15*, ended in failure when *Luna 15* crashed into Mare Crisium while Armstrong and Aldrin were still on the lunar surface. * **Technical and Operational Resilience:** The mission overcame significant in-flight anomalies, including trajectory overshoots during descent, guidance computer executive overflow alarms (1201 and 1202) triggered by a radar hardware design flaw, a rapidly depleting fuel reserve during landing, and a broken circuit breaker in the Lunar Module cabin that was engaged using a felt-tip pen. * **Scientific and Historical Returns:** The crew executed a 2-hour, 31-minute, 40-second Extravehicular Activity (EVA), returned 47.51 lb (21.55 kg) of lunar material containing three previously unknown minerals (*armalcolite*, *tranquillityite*, and *pyroxferroite*), deployed the Early Apollo Scientific Experiments Package (EASEP), and transmitted live television coverage viewed by an estimated 600 million people worldwide. * **Safety and Recovery Protocols:** The crew safely splashed down in the North Pacific Ocean on July 24, 1969, after 8 days, 3 hours, 18 minutes, and 35 seconds of flight. Emergency weather rerouting was made possible prior to recovery due to classified spy satellite monitoring of an impending storm front. --- ## 1. Historical, Political, and Programmatic Context ### The Cold War and Space Race Infrastructure The launch of *Sputnik 1* by the Soviet Union on October 4, 1957, initiated the Sputnik crisis and ignited the Space Race. The achievement demonstrated Soviet capabilities in intercontinental ballistic missile technology, directly challenging American perceptions of military and technological dominance. In response, President Dwight D. Eisenhower established NASA and initiated Project Mercury. Subsequent early Soviet milestones—most notably cosmonaut Yuri Gagarin becoming the first human in space and orbit on April 12, 1961—forced U.S. leadership to seek a long-term goal where existing Soviet launcher advantage (higher lift capacity) would be neutralized. ### Presidential Directives On May 25, 1961, President John F. Kennedy addressed a joint session of Congress on "Urgent National Needs," establishing the core mandate for Project Apollo: > "I believe that this nation should commit itself to achieving the goal, before this decade [1960s] is out, of landing a man on the Moon and returning him safely to the Earth. No single space project in this period will be more impressive to mankind, or more important for the long-range exploration of space; and none will be so difficult or expensive to accomplish." Kennedy reinforced this commitment during a speech at Rice University on September 12, 1962, stating: > "We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard; because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one we intend to win..." Despite political rhetoric, the program faced internal domestic criticism; MIT mathematician Norbert Wiener notably dismissed the initiative as a "moondoggle." Kennedy explored potential joint U.S.-Soviet lunar expeditions during meetings with Soviet Premier Nikita Khrushchev in June 1961 and at the UN General Assembly in September 1963, but these concepts were abandoned following Kennedy's assassination. ### Technical Foundations and Precursor Missions In July 1962, NASA Administrator James Webb approved Lunar Orbit Rendezvous (LOR) as the core mission architecture over direct ascent and Earth orbit rendezvous. LOR allowed a single Saturn V rocket to launch a three-part spacecraft: 1. **Command Module (CM):** Cabin housing the three-man crew; the only component designed to return intact to Earth. 2. **Service Module (SM):** Propulsion, electrical power, oxygen, and water supply. 3. **Lunar Module (LM):** Two-stage craft comprising a descent stage for landing and an ascent stage for returning astronauts to lunar orbit. Project Gemini established the rendezvous, docking, and EVA techniques required for Apollo. Advanced hardware integrations—specifically metal–oxide–semiconductor field-effect transistors (MOSFETs) in the Interplanetary Monitoring Platform (IMP) and silicon integrated circuit (IC) chips in the Apollo Guidance Computer (AGC)—enabled the miniaturization of onboard computing. Following the fatal *Apollo 1* launchpad fire on January 27, 1967, which killed astronauts Gus Grissom, Ed White, and Roger B. Chaffee, the Apollo hardware underwent systematic testing: * **Apollo 7 (Oct 1968):** Evaluated the CM in Earth orbit. * **Apollo 8 (Dec 1968):** Tested the CSM in lunar orbit. * **Apollo 9 (Mar 1969):** Evaluated the LM in Earth orbit. * **Apollo 10 (May 1969):** Conducted a full "dress rehearsal" in lunar orbit, bringing the LM within 15 km (9.3 mi) of the surface. ### Soviet Parallel Activities While the U.S. pursued Apollo 11, Soviet efforts to land humans stalled due to failures in developing the N1 heavy-lift launcher. The USSR pivoted to uncrewed automated sample return. On July 13, 1969—three days before Apollo 11 launched—the Soviets launched *Luna 15*. The uncrewed probe entered lunar orbit ahead of Apollo 11, but suffered a malfunction during descent and crashed in Mare Crisium at 15:50 UTC on July 21, approximately two hours before Apollo 11's planned return liftoff from the lunar surface. --- ## 2. Mission Specifications and Operational Parameters | Parameter | Specification / Data Point | | :--- | :--- | | **Mission Type** | Crewed Lunar Landing (G Type) | | **Operator** | NASA | | **Spacecraft Identification** | CSM-107 (*Columbia*); LM-5 (*Eagle*) | | **COSPAR ID** | CSM: 1969-059A; LM: 1969-059C | | **SATCAT Catalog No.** | CSM: 4039; LM: 4041 | | **Launch Vehicle** | Saturn V SA-506 | | **Launch Site** | Launch Complex 39A, Kennedy Space Center, Florida | | **Launch Mass** | 109,646 lb (49,735 kg) | | **Landing Mass (LM)** | 10,873 lb (4,932 kg) | | **Total Mission Duration**| 8 days, 3 hours, 18 minutes, 35 seconds | | **Orbital Insertion (Selenocentric)** | July 19, 1969, 17:21:50 UTC | | **Lunar Orbit Parameters** | Periselene: 100.9 km (54.5 nmi); Aposelene: 122.4 km (66.1 nmi); Inclination: 1.25°; Period: 2 hours | | **Lunar Surface Coordinates**| Tranquility Base, Mare Tranquillitatis (0.67416°N, 23.47314°E) | | **Surface Stay Duration** | 21 hours, 36 minutes, 20 seconds | | **EVA Duration** | 2 hours, 31 minutes, 40 seconds | | **Sample Material Returned**| 47.51 lb (21.55 kg) | | **Recovery Asset / Location**| USS *Hornet*; North Pacific Ocean (13°19′N, 169°9′W) | --- ## 3. Personnel Structure and Personnel Assignments ### Prime and Backup Flight Crews * **Commander:** Neil A. Armstrong (Second and final spaceflight) * **Command Module Pilot (CMP):** Michael Collins (Second and final spaceflight) * **Lunar Module Pilot (LMP):** Edwin "Buzz" Aldrin Jr. (Second and final spaceflight) #### Crew Reassignments and Dynamics The initial crew structure was established in November 1967 when Armstrong, Jim Lovell, and Aldrin were assigned as the backup crew for Apollo 9. Manufacturing delays with the LM caused Apollo 8 and Apollo 9 to swap prime and backup crews, putting Armstrong's crew in line to back up Apollo 8 and prime Apollo 11 under standard rotation protocols. When original Apollo 8 CMP Michael Collins required spinal surgery for a bone growth between his fifth and sixth vertebrae, Lovell moved into the Apollo 8 prime crew, Fred Haise filled in as backup LMP, and Aldrin served as backup CMP. Upon recovering, Collins was integrated into Armstrong's crew as CMP for Apollo 11. Flight Crew Operations Director Deke Slayton offered Armstrong the opportunity to replace Aldrin with Lovell due to perceived friction with Aldrin, but Armstrong declined, noting that Lovell deserved his own command (which became Apollo 13). Collins and Aldrin described the prime crew as "amiable strangers," forging a formal and effective working relationship without the close social personal dynamic seen on missions like Apollo 12. * **Backup Crew:** Jim Lovell (Commander), William Anders (CMP), Fred Haise (LMP). Ken Mattingly trained in parallel as backup CMP due to Anders accepting a position with the National Aeronautics and Space Council starting August 1969. ### Ground Control, CAPCOMs, and Management #### Support Crew Ken Mattingly, Ronald Evans, Bill Pogue. #### Capsule Communicators (CAPCOM) Communication directly with the spacecraft was restricted to CAPCOM astronauts to ensure operational clarity. CAPCOMs included Charles Duke, Owen Garriott, Don L. Lind, Bruce McCandless II, Harrison Schmitt, William Anders, Ronald Evans, Fred Haise, Jim Lovell, and Ken Mattingly. #### Flight Directors * **Shift 1 (Green Team):** Clifford E. Charlesworth (Launch and EVA) * **Shift 1 (Gold Team - Backup):** Gerald D. Griffin * **Shift 2 (White Team):** Gene Kranz (Lunar Landing) * **Shift 3 (Black Team):** Glynn Lunney (Lunar Ascent) * **Shift 4 (Maroon Team):** Milton Windler (Planning) #### Key Support Personnel | Name | Specialty / Role | Core Contribution | | :--- | :--- | :--- | | **Farouk El-Baz** | Geologist | Studied lunar surface geology; identified landing sites; trained pilots. | | **Kurt Debus** | Rocket Scientist | Supervised construction and operation of launch pads and infrastructure. | | **Jamye Flowers** | Executive Secretary | Secretarial support for astronaut office. | | **Eleanor Foraker** | Tailor / Designer | Lead hand-assembler and designer for Apollo spacesuits. | | **Jack Garman** | Computer Engineer | Mission Control technician; verified 1201/1202 alarms were safe to proceed. | | **Millicent Goldschmidt**| Microbiologist | Designed aseptic lunar material collection protocols and astronaut training. | | **Eldon C. Hall** | AGC Hardware Engineer | Designed hardware architecture for the Apollo Guidance Computer. | | **Margaret Hamilton** | Software Engineer | Lead flight software engineer at MIT; authored fault-tolerant AGC software. | | **Milton E. Harr** | Geotechnical Engineer| Designed footpads for the Apollo Lunar Module landing gear. | | **John Houbolt** | Engineer / Planner | Primary advocate and route planner for Lunar Orbit Rendezvous (LOR). | | **Gene Shoemaker** | Field Geologist | Instructed prime and backup crews in field geology techniques. | | **Bill Tindall** | Flight Operations | Mission techniques coordinator; standardized operational trajectory rules. | --- ## 4. Pre-Launch Preparations, Logistics, and Decisions ### Insignia and Call Sign Designations * **Insignia:** Designed by Michael Collins, featuring an American bald eagle landing on the Moon with Earth in the background. At the suggestion of simulator instructor Tom Wilson, an olive branch was included. Originally drawn in the eagle's beak, NASA officials (including MSC Director Bob Gilruth) deemed the talons too warlike, prompting the olive branch to be shifted to the talons. Crew names were intentionally omitted from the patch so it would represent everyone who contributed to the landing. * **Call Signs:** Early mission planning used internal/external call signs *Snowcone* (CM) and *Haystack* (LM). Following public affairs concerns regarding flippant designations (such as Apollo 10's *Charlie Brown* and *Snoopy*), Julian Scheer urged the adoption of formal names. The LM was designated *Eagle* (after the insignia), and the CM was named *Columbia*—referencing *Columbiad*, the space launch cannon in Jules Verne's 1865 novel *From the Earth to the Moon*, as well as a traditional historic name for the United States. ### Personal Preference Kits (PPKs) and Mementos Five 0.5-pound (0.23 kg) Personal Preference Kits were stowed on board (three in *Columbia*, two in *Eagle*). Neil Armstrong’s LM PPK contained: * A piece of wood from the left propeller of the Wright brothers' 1903 *Wright Flyer*. * A piece of fabric from the *Wright Flyer's* wing. * A diamond-studded astronaut pin originally belonging to Deke Slayton, gifted by the widows of the *Apollo 1* crew. ### Landing Site Selection Criteria The Apollo Site Selection Board announced five potential landing sites on February 8, 1968, compiled from uncrewed *Lunar Orbiter* and *Surveyor* photographic data: 1. **Site 1:** Sea of Tranquility (*Mare Tranquillitatis*) 2. **Site 2:** Sea of Tranquility (*Mare Tranquillitatis*) — **Selected** 3. **Site 3:** Central Bay (*Sinus Medii*) — Backup 4. **Site 4:** Ocean of Storms (*Oceanus Procellarum*) 5. **Site 5:** Ocean of Storms (*Oceanus Procellarum*) — Backup Final selection of Site 2 was governed by seven technical constraints: * Relatively smooth surface with low crater density. * Approach path free of large hills, cliffs, or deep craters that could distort landing radar signals. * Minimum propellant expenditure required for spacecraft trajectory. * Flexibility to accommodate launch countdown delays. * Maintenance of a free-return trajectory capability during trans-lunar coast. * Sun angle between 7° and 20° behind the LM during approach (requiring launch windows limited to one specific day per month to limit operational surface temperature extremes). * General ground surface slope of less than 2°. ### First-Step Protocol Decision Historical media reports early in 1969 incorrectly presumed Buzz Aldrin would step out first, mirroring Project Gemini operations where the pilot executed EVAs while the commander remained inside the spacecraft. The decision to have Neil Armstrong step onto the surface first was finalized and announced on April 14, 1969. Primary contributing factors included: * **Physical Cabin Geometry:** The LM hatch opened inward and hinged to the right, facing the Lunar Module Pilot's side. For Aldrin to egress first in a fully pressurized suit, he was forced to physically squeeze over the commander's position, damaging simulator equipment during trials. * **Command Hierarchy:** Flight Crew Operations Director Deke Slayton formally invoked the commander's prerogative. * **Public Representation:** Flight Operations Director Chris Kraft revealed in his autobiography that top management (Gilruth, Slayton, Low, and Kraft) deliberately stepped in to ensure Armstrong—a quiet civilian—was the first human on the surface, explicitly likening his demeanor to Charles Lindbergh. --- ## 5. Comprehensive Mission Execution Timeline ### Launch, Trans-Lunar Injection, and Flight Phase On July 16, 1969, at 13:32:00 UTC, Saturn V AS-506 launched Apollo 11 from Launch Complex 39A. Launch operations were managed with 43 automated programs written in the ATOLL programming language. Over 1 million spectators gathered along Florida highways, alongside 3,500 journalists and high-ranking dignitaries (including Vice President Spiro Agnew, former President Lyndon B. Johnson, and Army Chief of Staff William Westmoreland). ``` [13:32:00 UTC] Saturn V Liftoff │ [13:34:42 UTC] S-IC First Stage Shutdown & Separation │ [13:41:08 UTC] S-II Second Stage Cutoff & Separation │ [13:44:00 UTC] Initial Earth Orbit Insertion (100.4 x 98.9 nmi) │ (1.5 Earth Orbits / 2.5 Hours) [16:16:16 UTC] S-IVB Trans-Lunar Injection (TLI) Burn (5 min, 47 sec) │ [16:46:00 UTC] Transposition, Docking, & Extraction (Columbia docks with Eagle) ``` During the trans-lunar coast, the spent S-IVB stage was maneuvered past the Moon using a gravitational slingshot into heliocentric orbit to avoid impact with the spacecraft, Earth, or Moon. ### Lunar Orbit Entry and Lunar Descent Apollo 11 entered lunar orbit on July 19 at 17:21:50 UTC, completing 30 orbits over the course of its stay. On July 20 at 12:52:00 UTC, Armstrong and Aldrin entered *Eagle*. Undocking occurred at 17:44:00 UTC while Collins inspected the vehicle from *Columbia*. During descent, three operational criticalities developed: 1. **Trajectory Overshoot ("Downrange Long"):** The LM passed surface landmarks 2 to 3 seconds early. Potential causes included gravitational mass concentrations (*mascons*), unvented air pressure in the docking tunnel prior to undocking, or dynamic perturbations from *Eagle’s* turn-around maneuver. 2. **1201 and 1202 Computer Alarms:** Five minutes into the descent burn at an altitude of 6,000 feet (1,800 m), the Apollo Guidance Computer threw executive overflow alarms. Software engineer Margaret Hamilton had designed the AGC software to drop lower-priority tasks (such as processing secondary radar data) to preserve primary guidance calculations, preventing an automatic abort. Guidance Officer Steve Bales and computer technician Jack Garman in Houston issued a "GO" command. Software engineer Don Eyles later confirmed in 2005 that an electrical phasing mismatch in the rendezvous radar switch hardware caused the computer to steal extra processing cycles. 3. **Hazard Avoidance and Manual Takeover:** Observing that the guidance system was directing *Eagle* into a boulder field surrounding West Crater (300 feet in diameter), Armstrong took manual pitch control to override the automatic lander system. ``` [1,800 m / 6,000 ft] 1201 & 1202 Alarms (Garman/Bales GO) │ [91 m / 300 ft Altitude] West Crater Boulder Field Avoidance │ [33 m / 107 ft Altitude] Low Fuel State & Dust Cloud Obscuration │ [Surface Contact - 1.7 m Probes] "Contact Light!" -> Engine Shutdown │ [20:17:40 UTC, July 20, 1969] Touchdown at Tranquility Base ``` *Eagle* touched down at 20:17:40 UTC on Sunday, July 20, 1969, with roughly 216 lb (98 kg) of usable propellant remaining—representing 25 to 50 seconds before an abort threshold would be triggered. Propellant sloshing had uncovered a fuel sensor early, prompting NASA to retrofit future lander tanks with anti-slosh baffles. Upon touchdown, Armstrong communicated the revised call sign to CAPCOM Charles Duke: > **Armstrong:** "Houston, Tranquility Base here. The *Eagle* has landed." > **Duke:** "Roger, Twan— Tranquility, we copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot." Two and a half hours after landing, Aldrin radioed Earth asking listeners to contemplate the event, then privately took Holy Communion using a kit prepared by Pastor Dean Woodruff of Webster Presbyterian Church (keeping the religious nature silent to avoid ongoing litigation filed against NASA by Madalyn Murray O'Hair). ### Lunar Surface Operations (EVA) The crew bypassed a scheduled 5-hour sleep cycle, initiating EVA prep at 23:43 UTC. Cabin depressurization began 6 hours and 39 minutes post-landing. ``` [02:39:33 UTC, July 21] Hatch Unsealed & Opened │ [02:51:00 UTC] Armstrong Egress & Ladder Descent; MESA D-Ring Pulled │ [02:56:15 UTC] Armstrong's First Step onto Lunar Regolith │ [03:03:00 UTC] Contingency Soil Sample Collected │ [03:15:00 UTC] Aldrin Egresses LM; Joins Armstrong on Surface │ [03:41:00 UTC] Lunar Flag Assembly Planted & Saluted │ [03:43:00 UTC] Presidential Telephone Call (Nixon / Oval Office) │ [04:00:00 UTC] EASEP Deployment & Core Sample Drilling │ [05:01:00 UTC] Ingress Completed; Equipment Dump │ [05:11:13 UTC] LM Hatch Re-sealed and Cabin Pressurized ``` #### Major EVA Events and Artifacts * **Broadcast Television:** Slow-scan black-and-white signals were received by the Honeysuckle Creek Tracking Station and the Parkes Radio Telescope in Australia, converted for standard broadcast, and viewed by 600 million people. * **The First Step:** Armstrong stepped off the landing pad onto the surface at 02:56:15 UTC, declaring: > "That's one small step for [a] man, one giant leap for mankind." * **Surface Dynamics:** Gravity was one-sixth of Earth's; mobility was primarily performed via "loping" or two-footed kangaroo hops. Sunlight generated distinct thermal effects on spacesuit visors, and kicking up fine regolith dust heavily soiled the lower suit layers. * **Flag Placement:** The Lunar Flag Assembly was driven only 2 inches (5 cm) into the hard subsurface. * **Presidential Call:** President Richard Nixon spoke with the crew via a radio line routed through the White House: > **Nixon:** "...For one priceless moment in the whole history of man, all the people on this Earth are truly one: one in their pride in what you have done, and one in our prayers that you will return safely to Earth." > **Armstrong:** "Thank you, Mr. President. It's a great honor and privilege for us to be here..." * **Scientific Instruments Deployed:** The Early Apollo Scientific Experiments Package (EASEP) included: 1. *Passive Seismic Experiment Package:* Recorded moonquakes. 2. *Retroreflector Array:* Target for long-term Lunar Laser Ranging experiments. #### Commemorative Items Deposited on Lunar Surface * Stainless steel plaque on the LM descent stage ladder bearing two hemisphere drawings of Earth, signed by the three astronauts and President Nixon, reading: > "Here men from the planet Earth first set foot upon the Moon July 1969, A. D. We came in peace for all mankind." * Apollo 1 patch commemorating Grissom, White, and Chaffee. * Memorial medals honoring deceased Soviet cosmonauts Vladimir Komarov and Yuri Gagarin. * Gold replica of an olive branch. * Silicon goodwill disc containing messages from leaders of 73 nations, U.S. Congressional leadership lists, and NASA executive records. #### Lunar Material Collection The crew collected 47.51 lb (21.55 kg) of surface material, including core samples drilled 6 inches (15 cm) deep and rock types classified as basalt and breccia. Chemical analysis of the samples identified three new mineral structures: 1. **Armalcolite:** Named after **Arm**strong, **Al**drin, and **Col**lins. 2. **Tranquillityite:** Named after the Sea of Tranquility. 3. **Pyroxferroite:** Iron-rich silicate mineral. *(All three minerals were subsequently discovered in Earth geology.)* ### Solo Operations in Lunar Orbit (*Columbia*) While *Eagle* was on the surface, Michael Collins orbited the Moon solo aboard *Columbia*. Every orbit included 48 minutes on the far side of the Moon completely isolated from radio communication with Earth. In his autobiography, Collins refuted perceptions of extreme isolation: > "...this venture has been structured for three men, and I consider my third to be as necessary as either of the other two... awareness, anticipation, satisfaction, confidence, almost exultation." During his third orbit, an Environmental Control System warning indicated a dangerous temperature drop in the coolant. Collins bypassed procedural steps to manually override procedure 17, toggling the switch between manual and automatic to normalize system function. He continuously attempted to spot *Eagle* using optical telescopes based on revised coordinates from Mission Control, though without success. ### Ascent, Rendezvous, and Return Trajectory Prior to launch, Aldrin noticed that a suit backpack had accidentally sheared off the plastic circuit breaker stem required to arm the ascent engine switch. Aldrin successfully jammed the non-conductive plastic tip of a Duro felt-tip pen into the switch assembly to arm the propulsion system. ``` [17:54:00 UTC, July 21] Ascent Engine Fired; Liftoff from Moon │ (21.5 Hours total surface stay) │ Ascent blast knocks over U.S. Flag (observed by Aldrin) │ [21:24:00 UTC] Eagle Rendezvous with Columbia in Orbit │ [21:35:00 UTC] Docking Executed Successfully │ [23:41:31 UTC, July 21] Eagle Ascent Stage Jettisoned into Lunar Orbit │ [16:50:35 UTC, July 24] Splashdown in North Pacific Ocean ``` Prior to splashdown, US Air Force Captain Hank Brandli leveraged classified military spy satellite photography to identify a severe storm system heading directly toward the primary splashdown target zone. Brandli alerted Navy Captain Willard S. Houston Jr., Commander of the Fleet Weather Center at Pearl Harbor, allowing NASA to shift the landing target, avoiding extreme atmospheric turbulence that would have torn open the recovery parachutes. *Columbia* safely splashed down on July 24, 1969, at 16:50:35 UTC in the North Pacific Ocean, 13°19′N 169°9′W, and was retrieved by Navy divers and the prime recovery ship USS *Hornet*. --- ## 6. Contingency Planning and Historical Legacy ### Operational Contingencies: The Safire Memo Because lunar ascent carried zero redundancy, White House speechwriter William Safire drafted a contingency speech titled *"In Event of Moon Disaster"* for President Nixon on July 18, 1968. The protocol mandated that in the event the astronauts were stranded on the surface: 1. Mission Control would immediately terminate all two-way radio communications with the LM. 2. A formal ritual likened to a burial at sea would be performed, wherein a clergyman would "commend their souls to the deepest of the deep." 3. The proposed announcement echoed World War I poet Rupert Brooke’s work *"The Soldier"*. 4. The draft omitted mention of Michael Collins, as it was expected he would be forced to abandon his crewmates and return to Earth alone. ### Post-Mission Disposition * **Crew Honors:** The crew was awarded the Presidential Medal of Freedom, given ticker-tape parades across the United States, and sent on an international goodwill tour. * **Spacecraft Artifacts:** The Command Module *Columbia* is displayed at the Smithsonian's National Air and Space Museum in Washington, D.C. The descent stage of *Eagle* remains *in situ* at Tranquility Base (0.67416°N, 23.47314°E). *Eagle’s* jettisoned ascent stage eventually impacted the Moon after its orbit decayed, though 2021 orbital mechanics calculations suggest it may potentially remain in an unstable lunar orbit.