O’Hara, a 2014 graduate of Parkview High School, was serving as the crew chief aboard a UH-60 Black Hawk helicopter when it ...

NTSB finds conflicting altitude readings from different sources and miscommunication between ATC and the Black Hawk.

The crash was the deadliest U.S. air crash in nearly 25 years, claiming the lives of all 67 people on board both aircraft.

The Black Hawk's cockpit voice recorder (CVR) then appears not to have picked up crucial instructions to veer out of the ...