Apollo Extravehicular Mobility Unit (EMU) Pressure Garment Assembly (PGA) . . Apollo intravehicular Pressure Garment Assembly, which formed the basis of the Extravehicular Mobility Unit.  This suit was worn during dangerous parts of the mission, such as launch, dockings, and lunar landing and liftoff, to protect the crewmen from rapid depressurization from a hull puncture.  It was also designed to be highly fire proof after the Apollo 1 fire which killed astronauts Grissom, White and Chaffee. . Back to Apollo EMU Gallery