What You Need to Know: Stealth technology has reshaped modern air combat, but helicopters remain largely outside this trend due to challenges like turbine noise and vibrations. However ...

It was built to be invisible, unstoppable, and ahead of its time—yet it vanished before it ever saw battle. The ...

Photos of the wreckage of one of the helicopters used in the raid on Osama bin Laden's compound has fueled speculation that the aircraft used was a new kind of stealth helicopter, the existence of ...