The letter also talked about “how easy it is to get a gun into the airport,” the law enforcement official said.
When searched, the suspect had five 30-round magazines, and his bag contained hundreds more rounds in boxes.
The FBI was still looking into Ciancia’s past, but investigators said they had not found evidence of previous crimes or any run-ins with the TSA. They said he had never applied for a job with the agency.
Rep. Michael McCaul, R-Texas, chairman of the House Homeland Security Committee, said on CNN’s State of the Union on Sunday that Ciancia’s actions show how difficult it is to protect travelers at a massive airport such as LAX.
The terminals are open and easily accessible to thousands of people who arrive at large sliding glass doors via a broad ring road that fronts the facility and is designed to move people along quickly.
“It’s like a shopping mall outside the perimeter,” McCaul said.
TSA Administrator John Pistole said the agency will need to work with each airport’s police agency “to see how we’ll go about in providing the best possible security.”
On Monday, Ciancia’s New Jersey relatives offered sympathy to the family of the slain security officer and their hopes for the recovery of other victims. The attorney for the Pennsville, N.J., family, John Jordan, declined to take questions.
The TSA said the other two officers wounded in the attack — James Speer, 54, and Tony Grigsby, 36 — were released from the hospital.
Brian Ludmer, a high school teacher, remained hospitalized. He has to undergo at least one more surgery on his leg and extensive physical therapy, hospital officials said Monday, but his condition was upgraded from fair to good.
Two other people suffered injuries trying to evade the gunman, but were not shot.