Black Hawk

The Black Hawk helicopter has served the U.S. Army well. But it’s been around since 1979. Time for a revamp, with advanced electronics, more-powerful engines, and various other tweaks. The UH-60M Upgrade, as it’s officially known, made its first flight last summer, and the Connecticut aircraft-manufacturer Sikorsky will start delivering them to the Army next year and ramp up to full production by 2013.