Two views showing Neil Armstrong and David Scott preparing for the first docking in space and second American EVA during their upcoming mission, Gemini 8, February - March 1966.Vintage gelatin silver prints on fibre-based paper, 20.3 x 25.4 cm (8 x 10 in), the first with NASA caption on verso, the second BLACK NUMBERED NASA S-66-18717, blank on verso, (NASA Kennedy Space Center and NASA Manned Spacecraft Center), (2)Footnote: First photo: Neil Armstrong's mission was to perform the first docking ever to take place in space on Gemini VIII, a major milestone of space exploration.[NASA caption] Cape Kennedy, FLA. __ Astronaut Neil Armstrong, Command Pilot for the National Aeronautics and Space Administration's Gemini VIII mission is suited up by a NASA suit technician during weight and balance test.Second photo: David Scott practicing for the extravehicular activity (EVA) in the vacuum chamber at the Manned Spacecraft Center in Houston. Scott is wearing the Hand-Held Maneuvering Unit (HHMU) which he will use during the EVA. High pressure cold gas released through the unit's nozzles produces the required controlled thrust to manoeuvre in a zero-gravity environment. Scott couldn't perform the EVA due to an in-space system failure of the spacecraft following docking with the Agena Vehicle.