xxIMAGE 500_599\590.Lbm,Scuba divers assist astronauts training for EVA in the water tank at the Johnson Space Center.
xxIMAGE 800_899\819.Lbm,A spacesuit-clad technician demonstrates the manned manoeuvring unit (MMU), the Buck Rogers-style jet-propelled backpack used by shuttle astronauts on EVA.
xxIMAGE 700_799\716.Lbm,Edward White floats in space during the first ever US EVA from Gemini 4 in June 1965. He is secured by an umbilical/tether.
xxIMAGE 800_899\843.Lbm,Jerry Ross catches a ride on the 'cherry picker' during a spectacular EVA session on STS-61A.
xxIMAGE 700_799\749.Lbm,Advanced construction in Earth orbit early next century. Much of the work is done by remote-controlled robots.