Helicopters in Kentucky crash are versatile Army workhorses

Two U.S. Army Black Hawk medical evacuation helicopters crashed during training Wednesday night in Kentucky, killing nine soldiers. Here are questions and answers about Black Hawks:

WHAT IS THE BLACK HAWK?

The Black Hawk is a twin-engine, four-bladed, medium-lift, utility helicopter developed for the U.S. Army since the 1970s by Sikorsky Aircraft of Stratford, Connecticut. It typically has a crew of two pilots and two crew chiefs. Its basic Army designation is H-60; export versions are designated S-70.

WHAT IS IT USED FOR?