Investigators have recovered the black boxes from both aircraft involved in the deadly midair collision near Washington, D.C.

Lt. Col. Jennifer-Ruth Green is working as a ground incident commander at the scene of Wednesday's plane crash in the Potomac River.

It appears all involved were killed, which would make this the deadliest U.S. air crash in nearly 24 years. Authorities were continuing to search for remains on Thursday. D.C. fire and EMS chief John ...