The wreckage of a military helicopter involved in a mid-air collision with a passenger jet that killed all 67 people on both aircraft was recovered Thursday from the Potomac River, federal officials said.

Crews working at the site of the deadliest aviation disaster in a generation have recovered all 67 victims of the collision between two aircraft over the Potomac River in Washington, DC, officials said Tuesday.

The Army helicopter that collided with a passenger plane above the Potomac River boasted an experienced crew doing “an unforgiving job.” Friends and relatives are still baffled and mourning their loss.