After an American Airlines flight and a military helicopter collided and crashed into the Potomac river Jan. 29, more than 30 bodies have been recovered, NBC Washington has confirmed.

There were no survivors after an American Airlines regional jet with 64 people aboard collided with a Black Hawk military helicopter moments before the airplane was set to land at Washington, D.C.'s Ronald Reagan Washington National Airport on Wednesday night, officials said. The accident was the worst air disaster in the U.S. since 2001.