Ever wonder what TSA does beyond checkpoints? From travel disruptions to behind-the-scenes safety, the agency's reach goes ...

WASHINGTON — It is supposed to be a last line of defense against a Sept. 11-style attack on the United States. But a federal program that puts armed undercover guards on commercial airliners is in ...

The Transportation Security Administration acknowledged Wednesday that officials misspoke when they said scheduled flights to Cuba, which resumed for the first time in 50 years, would have air ...