ARLINGTON, Va. − Crews returned to the Potomac River and forged ahead with a massive salvage effort on Wednesday, one week after a horrifying midair crash that killed all 67 people aboard a passenger jet and Army Black Hawk helicopter.

Salvage crews worked on the Potomac River on Thursday morning and could be seen pulling out pieces of the Army Black Hawk helicopter that crashed with a plane last week, killing everyone on board both aircraft.

The pieces of wreckage recovered Tuesday were lifted by a crane and placed onto a barge with other parts recovered from the flight that took off from Wichita, Kansas, for Washington's Reagan National Airport with 60 passengers and four crew members on board. One of the pieces recovered earlier in the day showed a portion of the American Eagle logo.