NASA astronaut Mark Vande Hei assists NASA spacewalker Thomas Marshburn in the U.S. Quest airlock.
iss066e078589 (Nov. 18, 2021) — NASA astronaut Mark Vande Hei assists NASA spacewalker Thomas Marshburn in the U.S. Quest airlock before the beginning of a six-hour and 32-minute spacewalk to replace a faulty antenna system on the International Space Station’s Port-1 truss structure.