Investigators have yet to determine whether the crew of an Army helicopter was wearing the devices when the Black Hawk ...

OK, so, uh, flying night vision goggles is the most demanding mode of flight we fly in, uh, and it's, it's multifaceted, right? One is you got your helmet and then on top of that you have ...

One of the open questions is whether or not the military aircrew flying the UH-60 Black Hawk was wearing night-vision goggles at the time of the collision. How common is it for military helicopter ...