Washington, D.C., officials released updates about the investigation of the Jan. 29 Potomac River midair collision on Saturday, detailing what bodies and debris have been removed from the water.In a statement released on Saturday, Unified Command said that rescuers have recovered "42 sets of remains" from the crash area so far, and the D.C. chief medical examiner has positively identified 38.Sixty-seven people died in the incident.Officials also said that they attempted to remove the Sikorsky UH-60 Black Hawk helicopter with a crane, which was "briefly stabilized," but that the removal has not been successful so far."The U.S. Coast Guard is