Two T-38 jets crashed during routine training flights Thursday in Oklahoma, killing two airmen. The accident took place near Vance Air Base, and the Air Force said a total of four personnel were on the two-seater jets. The Air Force did not immediately provide information about the condition of the other two aboard, CNN reports, or give the names of the victims. The cause of the crash is under investigation.
Last year, a T-38 having engine trouble crashed and exploded in Oklahoma, per CBS News. The pilot survived after ejecting safely. Vance uses three types of planes in training; the T-38 Talon is a twin-engine, supersonic jet that's been used to train fighter pilots since 1961. The Air Force has announced plans to replace it. (Read more Air Force stories.)