来自MSN1 个月
Stealth Helicopters: Why Doesn't the U.S. Military Have This Weapon?
which spent $7 billion developing a low-observable scout helicopter before it was canceled due to technical setbacks. -The stealth-modified UH-60 Black Hawks used in the 2011 raid on Osama bin ...
What to know about the UH-60 Black Hawk helicopter involved in D.C. crash
For many, the Sikorsky UH-60 Black Hawk helicopter, like the one involved in the Wednesday collision over the Potomac River ...