Astronaut Jessica Watkins replaces components on a life support device

iss067e184990 (July 12, 2022) --- Expedition 67 Flight Engineer and NASA astronaut Jessica Watkins replaces components on the Major Constituents Analyzer (MCA) in the U.S. Destiny laboratory module's Avionic Rack. The MCA is a life support device ensures oxygen and carbon dioxide levels remain safe aboard the International Space Station.