Expedition 63 crew members (from left) Chris Cassidy and Ivan Vagner wear personal protective equipment (PPE) before opening the hatch and entering Japan's resupply ship.
iss063e015430 (May 25, 2020) — Expedition 63 crew members (from left) Chris Cassidy and Ivan Vagner wear personal protective equipment (PPE) before opening the hatch and entering Japan’s resupply ship, the H-II Transfer Vehicle-9 (HTV-9). The PPE is necessary before entering a newly-arrived cargo craft to prevent dust and other irritants that may have become dislodged during the spacecraft’s launch from entering the airways and the eyes.