Cosmonaut Aleksey A. Leonov focuses his camera for an interior shot during a simulation exercise for the Apollo Soyuz Test Project (ASTP). Leonov is inside the Soyuz Orbital module mockup in bldg 35 at JSC. Leonov is the Soviet ASTP crew commander (21715); Prime crew commanders for ASTP take a break from simulations at JSC to enjoy a lighter moment. Leonov sticks his head through the Soyuz orbital module mockup in the Flight Crew Training Facility (bldg 35) at JSC, while his American counterpart, Astronaut Thomas P. Stafford, looks on (21716).