The New York Times pointed out that ATC warned the helicopter twice – to watch for the airliner and to pass behind it – but the helicopter did not acknowledge ATC after these advisories.
It will take the NTSB a long time to investigate as it always does. The helicopter pilot was clearly in error. The airliner was turning onto the ILS at 200 feet for final approach and obviously had the right of way. It’s possible that the helicopter pilot didn’t receive ATC’s warning (tuned to the wrong frequency? malfunctioning equipment? inattention?) or simply didn’t see the approaching airliner.
This horrible tragedy will hopefully prompt the military to rethink its training missions in Class B airspace, especially intersecting airport landing approaches.
(above from another venue) Trump's uninformed thrashing BS needs to be called out, F'n idiotic AH!...