On July 24, 1969, the Apollo 11 crew with Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Buzz Aldrin splashed down in the Pacific Ocean after achieving the first lunar landing.
Upon splashing down, the Apollo 11 crew underwent a 21-day quarantine. The purpose of this was to protect against the small possibility of lunar contagion. This procedure was discontinued after Apollo 14. This photo provides a candid view of the astronauts in the Mobile Quarantine Facility.
Image Credit: NASA