Apollo 11 Spaceflight, First Manned Moon Landing

A second Sea King helicopter hoisted the astronauts aboard one by one, where a NASA flight surgeon gave each a brief physical check during the 0.5 nautical miles (930 m) trip back to the Hornet.
After touchdown on the Hornet, the astronauts exited the helicopter, leaving the flight surgeon and three crewmen. The helicopter was then lowered into hangar bay #2 where the astronauts walked the 30 feet (9.1 m) to the Mobile Quarantine Facility (MQF) where they would begin their 21 days of quarantine. This practice would continue for two more Apollo missions, Apollo 12 and Apollo 14, before the Moon was proven to be barren of life and the quarantine process dropped.
President Richard Nixon was aboard Hornet to personally welcome the astronauts back to Earth. He told the astronauts, "As a result of what you've done, the world has never been closer together before." After Nixon departed, the Hornet was brought alongside the five-ton command module where it was placed aboard by the ship's crane, placed on a dolly and moved next to the MQF. The Hornet sailed for Pearl Harbor where the command module and MQF were airlifted to the Johnson Space Center.
Years later, it was publicly revealed that Nixon had prepared a speech to be given in the event the Lunar Module had failed to lift off from the lunar surface, which would have resulted in Armstrong's and Aldrin's deaths, similar to common newspaper obituary or government contingency plan procedures and policies.