First responders are in a desperate search for survivors after a military helicopter collided with a plane near Reagan Washington National Airport in Virginia Wednesday night, according to officials.

The American Airlines flight traveling from Wichita, Kan., collided with the military chopper while approaching Runaway 33 at the DC airport around 9 p.m., according to the Federal Aviation Administration.

First responders have recovered at least 30 bodies from the river as of Thursday,

Some 300 first responders endured dark, cold and windy conditions as they continued to execute “a rescue operation” hours after the crash.