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.

The Army has released the name of the third soldier who died Wednesday when an Army helicopter collided with an American Airlines jet near the D.C. airport. Cpt.

The Army on Friday released the names of two male aviators who were killed when their Black Hawk helicopter collided with an American Airlines regional jet on Wednesday night. But in an extraordinary step, the Army did not identify the third crew member, a female pilot, citing her family’s request for privacy.