It has been nearly a week since a commercial jetliner and an Army helicopter collided in midair near Washington’s Ronald Reagan National Airport, killing 67 people in the deadliest U.S. air disaster since 2001.

Air Florida Flight 90 crashed into the 14th Street Bridge over the Potomac River. 78 passengers, cabin crew members and motorists died. Just five people survived, and only three are still alive to witness news of the American Airlines plane that collided with a U.