The wreckage of a U.S. Army Black Hawk helicopter in the Potomac River in Washington, D.C., Thursday. (BRANDON GILES/U.S. COAST GUARD) The U.S. Coast Guard released images taken Thursday of the ...

A WSJ visual investigation breaks down the helicopter corridors, airport runway paths and light pollution that may have played a role in the fatal D.C. crash. Photo Illustration: Brandon Giles/U.S.

The families of 64 passengers killed when an Army Blackhawk helicopter crossed into the path of a landing American Airlines flight say they are “deeply dismayed” by what they perceive as the Army’s ...