Sharks have been evolving for more than 450 million years, developing skeletons not from bone, but from a tough, mineralized ...

While the status of Army’s program to develop a future helicopter engine remains uncertain, a lead official confirmed a UH-60 ...

WASHINGTON — The National Transportation Safety Board (NTSB) is investigating after two planes were forced to perform go-arounds due to a U.S. Army Black Hawk helicopter near Reagan Washington ...

Getty An Army Black Hawk helicopter caused two commercial flights to abort their landings at Ronald Reagan Washington National Airport when its crew took "a scenic route." On Thursday, May 1 ...

According to Senn's email, both commercial flights were on final approach. At one point, the Black Hawk helicopter came within 0.4 miles and 200 feet from the Republic flight, and it came less ...

Restrictions were placed on helicopter flights near the airport, whose airport code is DCA, after a Jan. 29 midair collision between a Black Hawk helicopter and an American Airlines regional jet ...

U.S. Transportation Secretary Sean Duffy says it's "unacceptable" that two commercial jetliners had to abort landings this week at Ronald Reagan Washington National Airport because of an Army Black ...