A report on United States Air Force C-123B assault transport aircraft performance test at Ardmore Air Force Base in Oklahoma. Nine C-123Bs taxi, make cross-wind take offs and in flight. Two C-123Bs land on a dirt strip. U.S. troops board a C-123B. Litter patients loaded into a C-123B at a simulated front line casualty station. The C-123B takes off from the dirt strip.