Washington, D.C. officials have now positively identified 66 of the 67 people killed in Wednesday's midair collision between an American Airlines passenger jet and a military helicopter over the Potomac River.

The Federal Aviation Administration and National Transportation Safety Board are planning to brief senators just one week after a midair collision claimed the lives of 67 people.

Officials say the bodies all 67 passengers involved in the Washington, D.C. midair collision have been recovered from the Potomac River. It comes as new details on the investigation are emerging, including that the Black Hawk helicopter involved in the crash was flying at 300 feet.