The crash of a Marine Corps helicopter last year that killed five service members was ultimately caused by pilot error.

The crash of a Marine helicopter, like the one shown, that killed five Marines was ultimately caused by pilot error, but night vision goggles and unsafe flying conditions also likely were factors ...

WASHINGTON (AP) — The crash of a Marine Corps helicopter last year that killed five service members was ultimately caused by pilot error, but the use of night vision goggles and unsafe flying ...

WASHINGTON — The crash of a Marine Corps helicopter last year that killed five service members was ultimately caused by pilot error, but the use of night vision goggles and unsafe flying ...