Crews are on the scene on the Potomac River to retrieve the submerged wreckage of an airliner and an Army helicopter that collided midair in the deadliest U.S. air disaster since 2001.

Some have suggested that it stems from Hussenot's device because it used film and "ran continuously in a light-tight box, hence the name 'black box,'" according to Airbus, which noted that orange was ...