FILE – In this Nov. 1, 2013 file photo provided to The Associated Press, which has been authenticated based on its contents and other AP reporting, police officers stand near an unidentified weapon in Terminal 3 of the Los Angeles International Airport after a gunman who opened fire killing one person and wounding two others. Two armed police officers assigned to guard a Los Angeles airport terminal where a gunman killed a screener in Nov. 2013, left for breaks without informing dispatchers as required minutes before the gunfire erupted. (AP Photo, File)