NASA astronauts Jessica Meir (left) and Christina Koch are inside the Quest airlock preparing the U.S. spacesuits and tools they will use on their first spacewalk together.
iss061e006501 (Oct. 15, 2019) — NASA astronauts Jessica Meir (left) and Christina Koch are inside the Quest airlock preparing the U.S. spacesuits and tools they will use on their first spacewalk together. The Expedition 61 flight engineers are holding the pistol grip tools they will use to swap out a failed power controller, also known as a battery charge-discharge unit, that regulates the charge to batteries that collect and distribute power to the International Space Station.