jsc2026e037770 (May 5, 2026) --- NASA astronaut Luke Delaney practices suiting up in a spacesuit in an International Space Station airlock simulator at Johnson Space Center’s (JSC) Space Vehicle Mockup Facility in Houston, Texas. Astronauts familiarize themselves with spacesuit systems and procedures and practice Quest airlock operations before conducting spacewalk training at JSC’s Neutral Buoyancy Laboratory in simulated microgravity. Credit: NASA/Josh Valcarcel