Divers return to the Potomac River as part of the recovery after the United States’ deadliest aviation disaster in almost a quarter century

Jonathan Koziol, a retired Army chief warrant officer with more than 30 years of flight experience, told reporters that the flight was a nighttime qualification flight with an instructor pilot evaluating an experienced pilot on the flight routes that their unit routinely flies day and night around the Potomac River.

Sixty-seven people died in a collision between a Bombardier CRJ700 regional jet operated by PSA Airlines and a military Black Hawk helicopter.