Soviet and American ASTP commanders in Soyuz orbital module mock-up

S74-29041 (September 1974) --- The commanders of the American astronaut and Soviet cosmonaut crews for the joint U.S.?USSR Apollo-Soyuz Test Project mission compare notes in a Soyuz spacecraft?s orbital module mock-up in Building 35 at the Johnson Space Center during a training and simulation exercise. They are Aleksey A. Leonov, right, and Thomas P. Stafford. The hatchway in the background leads to the Docking Module. The prime crewmen, along with backup crewmen, are training in both the U.S. and USSR for the joint mission scheduled for the summer of 1975.