It’s been one week since American Eagle Flight 5342 crashed into the Potomac River, and the work has only begun to recover from the deadliest U.S.

Crews began the complex job of lifting American Airlines Flight 5432 from the Potomac River after it collided with an Army Black Hawk helicopter in the Washington, D.C., area.

Remains from all 67 victims of the midair collision over Washington, D.C., that sent an American Airlines regional plane and an Army Black Hawk helicopter crashing into the Potomac River have been recovered,