A midair collision near D.C. has raised concerns over FAA staffing, prompting scrutiny of air traffic control and aviation safety oversight.

President Trump appointed Christopher Rocheleau, a 22-year FAA veteran, as acting administrator of the agency.

An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside Reagan National Airport near Washington, D.C. Wednesday evening. Three soldiers were onboard the helicopter and a massive search and rescue operation is now unfolding in the Potomac River.