The inability of Russia, which has Europe’s biggest air force with roughly 600 warplanes, to operate freely over Ukraine has caused consternation not just for Vladimir Putin’s generals. It has also ...

The Bell Boeing V-22 Osprey is a remarkable tiltrotor aircraft that can function as both a helicopter and turboprop plane.

The Navy relieved the commanding officer of the carrier Harry S. Truman due to a "loss of confidence in his ability to ...