WASHINGTON (AP) — A union representative for police officers who secure Los Angeles International Airport told members of Congress Thursday he still has concerns about a manpower shortage and a lack of coordination and communication with the Transportation Security Administration nearly seven months after a gunman killed a TSA officer and injured three others.

Marshall McClain, testifying Thursday before a House subcommittee, said that the airport has been increasing its size and passenger levels, but that the number of “sworn officers” responsible for helping secure the airport has gradually declined in recent years. His written testimony cited 514 police officers in 2010 versus 495 this year.