An F-35 fighter jet crashed during a training exercise at Eielson Air Force Base in Alaska on Tuesday, but the pilot was safe after bailing out, base officials said. The pilot experienced an "in-flight malfunction," and was able to eject from the aircraft, U.S. Air Force Colonel Paul Townsend, commander of the 354th Fighter Wing, told a news conference, according to a report from the Associated Press. The crash happened while landing during a training exercise, according to the report. Eielson Air Force Base said in a statement that the incident on Tuesday afternoon resulted in "significant damage" to the F-35 Lightning II aircraft. The F-35 is the most expensive U.S. defense program and Lockheed Martin's biggest revenue generator, contributing about 30% of its bottom line.

