A commercial plane with 60 passengers and four crew members on board collided with a military helicopter with a crew of three near Washington, D.C., on Wednesday night.
While some reports suggest the helicopter pilot may have mistaken another plane for the American Airlines jet, Katz believes it was more likely human error.
An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.