Hundreds of first responders are diving in frigid water looking for survivors after a passenger plane collided with a US Army helicopter midair at Reagan National Airport near Washington, DC, Wednesday.

The American Airlines flight was carrying 64 people when it collided with a Black Hawk helicopter near Reagan National Airport.

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.