Air-traffic control radar appears to have measured a US Army helicopter flying at a lower altitude than an American Airlines Group Inc. jet before the two collided near Washington, DC, on Wednesday, National Transportation Safety Board officials said.

Capt. Rebecca M. Lobach, a decorated US Army officer from North Carolina, was identified as a victim of the Black Hawk crash that killed 67. The helicopter collided with an American Airlines jet during a training mission near Washington,

The Army’s Black Hawk helicopter was performing “doomsday” training when it collided with an American Airlines jet above Washington, D.C. on Wednesday, according to a new report. The helicopter was flying a route that’s part of a military plan to evacuate senior government officials to safety if the U.