Potomac by Air: Our Nation's River is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet ...

The preliminary findings reveal a concerning history of near-miss incidents ... to the tragic mid-air collision occurred over the Potomac River near Washington, D.C., involving a U.S. Army ...

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 ...