An American Airlines plane collided with a Black Hawk helicopter in midair outside of Washington, D.C., near Reagan Washington National Airport.

District of Columbia Fire and Emergency Medical Services Chief John Donnelly told reporters in a news briefing Thursday morning that 27 bodies had been recovered from the plane and one from the helicopter.

“We don’t believe there are any survivors,” he said, adding that the efforts at the scene have switched form a rescue operation to a recovery operation.