Progress 10 Heads to ISS Expedition Six Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit are waiting for the arrival of the Progress cargo ship, which is en route to the International Space Station. Progress 10 is slated to dock with the International Space Station at 8:50 a.m. CST (1450 GMT) Tuesday. It is filled with supplies and equipment for the station. Monday, they prepared for the cargo ship's arrival by testing systems that will be used during docking. Also, Bowersox and Budarin reviewed procedures for a backup system. Pettit set up and activated equipment for the Effects of EVA and Long-Term Exposure to Microgravity on Pulmonary Function, or PuFF, experiment. Then, all three crewmembers conducted sessions with Puff, which is studying the effects of space flight and spacewalks on human lung function. Also, the crew received a call from former President George Bush and Mrs. Barbara Bush. They were visiting the Mission Control Center, in Houston, Texas.