The U.S. Army on Friday released the names of two of the soldiers killed when the military Black Hawk in which they were flying collided with a passenger jet, but said, in an unusual decision, that they were not releasing the third name at the request of the family.

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.

The two pilots had a combined total of 1,500 flight hours and the crew chief was a senior aviator with at least 500 hours in the air.