Russia’s Battlegroup Center inflicted more than 4,000 casualties on Ukrainian troops and destroyed five enemy tanks in its area of responsibility over the week ...

Authorities have not pinpointed a reason for the collision, which happened as the regional jet was trying to land at Ronald Reagan Washington National Airport ...

The NTSB is an independent federal agency responsible for investigating all civil aviation accidents as well as serious incidents in the U.S. involving other modes of transportation, such as railroad ...