Just minutes before a gunman opened fire in Los Angeles International Airport last fall, killing a TSA security screener and wounding three other people, the two armed security officers assigned to the area left for breaks without informing a dispatcher as required, The Associated Press reports.

The Transportation Security Administration recently issued a solicitation for “Credential Authentication Technology” (CAT) which would ensure that only legitimate airport personnel, airline crews, non-traveling passengers using a gate pass, law enforcement officers and Federal Air Marshals can be granted access to sterile airport areas.

A gunman opened fire at a security checkpoint this morning at Los Angeles International Airport, and one TSA agent has been reported dead. The gunman was shot and wounded. 

Can you bring a toy lightsaber on a plane? Ask the TSA app! The updated MyTSA app includes a search function, which can tell travelers whether or not an item is allowed on aircraft.

TSA's VIPR squads have been patrolling railway stations, sporting events, rodeos, highway weigh stations and more, but not all parties are pleased about the group's expansion.