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Pentagon lost contact with Army helo that caused DC jet diversions
Controllers lost contact on May 1 because a temporary control tower antenna had not been set up at the correct location, Brig. Gen. Matthew Braman told AP.
By Tara Copp, AP
Army researchers develop injectable cyanide antidote
Cyanide is used in a variety of manufacturing processes, but it is highly toxic and a potential chemical warfare agent.
By Todd South
Army pauses helicopter flights near DC airport after more close calls
The pause comes after 67 people died in January when a passenger jet collided in midair with a Black Hawk helicopter at Reagan airport.
By Tara Copp, AP
DC helicopter route permanently closed after fatal Black Hawk crash
The move follows federal investigators's call for a ban on helo flights on the route, citing a string of near misses in recent years.
By John Seewer, The Associated Press and Tara Copp, AP
Black Hawk crew in DC crash may have missed key air traffic messages
The Black Hawk that collided with an American Airlines jet in January may not have had accurate altitude readings, investigators said.
By Jen Judson