Stock Photo - 04/29/1999 ___ Continuing with Terminal Countdown Demonstration Test TCDT activities, the STS_96 crew exit the Operations and Checkout Building after suiting up for their practice countdown exercise. The TCDT also provides the crew with emergency egress training and opportunities to inspect the mission payloads in the orbiter´s payload bay. Clockwise starting from the front left are Mission Specialists Tamara E. Jernigan Ph.D., Julie Payette, Ellen Ochoa Ph.D., Valery Ivanovich Tokarev, right side Daniel Barry M.D., Ph.D., Pilot Rick Douglas Husband, and Commander Kent V. Rominger. Scheduled for liftoff on May 20 at 9:32 a.m., STS_96 is a logistics and resupply mission for the International Space Station, carrying such payloads as a Russian crane, the Strela, a U.S._built crane, the Spacehab Oceaneering Space System Box SHOSS, a logistics items carrier, and STARSHINE, a student_led experiment