STS-26 Discovery, Orbiter Vehicle (OV) 103, Mission Specialist (MS) George D. Nelson practices donning and doffing new (navy blue) partial pressure suit (launch and entry suit (LES)) aboard KC-135 NASA 930 during zero gravity testing. Nelson is assisted by astronaut James P. Bagian as KC-135 flight crew (including Stephanie A. Wells) looks on and photographers document activities.