NASA astronauts Chris Williams and Jessica Meir pose for a portrait

iss074e0432745 (April 3, 2026) --- NASA astronauts Chris Williams and Jessica Meir, both Expedition 74 flight engineers, pose for a portrait aboard the International Space Station. Meir is wearing a portable breathing apparatus to test its readiness for unlikely emergency scenarios such as an oxygen leak, chemical leak, or fire aboard the orbital outpost.