Inside an Ellington Field hangar, 1990 astronaut candidates Leroy Chiao, seated in the rear cockpit, and Kenneth D. Cockrell, standing next to the fuselage, examine T-38A NASA 919 controls during familiarization training. Chiao, a mission specialist astronaut candidate, gets some guidance from Cockrell, a pilot astronaut candidate. The two are among the 23 astronaut candidates of the 1990 Group 13 who began a year's training and evaluation program recently. T-38A is one of the jet trainers in the NASA fleet based at Ellington Field. Cockrell is approved for piloting the jets.