A new helicopter quietly entered service with U.S. special forces, designed for missions that demand invisibility. With upgraded stealth features and refined performance, this aircraft reflects a new ...

Military helicopters are fast, noisy machines, so they've never been what you might call "stealthy." Despite this, the United States managed to reconfigure a small number of UH-60 Black Hawk ...

LOS ANGELES - When a U.S. military helicopter was destroyed in the backyard of Osama bin Laden's compound, it left not only a pile of smoldering wreckage but tantalizing evidence of a secret stealth ...