LOS ANGELES (CBSLA.com) — Operations at Los Angeles International Airport resumed Sunday, two days after Friday’s deadly rampage claimed a TSA officer’s life and left five others wounded, including the alleged gunman.

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The 100-foot pylons at LAX lit up in blue overnight while an American flag was flown at half-staff to remember TSA officer Gerardo I. Hernandez, 39. His death marked the first “line of duty” death in the agency’s 12-year history.

On Saturday, airport officials announced the reopening of Terminal 3, where the shooting unfolded just after 9:20 a.m. Friday. Although fully operational, some travelers expressed their reservations to KNX 1070’s Ed Mertz.

“I’m just creeped out because it’s unsettling,” Linda, a traveler, said. “I think the probability of anything ever happening ever happening again, right now, right here? Probably not.”

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Meanwhile, agents with the Federal Bureau of Investigation and multiple law enforcement agencies continued to work to piece together a sequence of events. They said they were examining evidence and surveillance footage.

They also made a public plea on Saturday for any digital materials pertaining to Ciancia or the incident. Witnesses were also asked to call the FBI Los Angeles tip line at (888) 226-8443.

Also on Saturday, officials announced that federal criminal charges were filed against the alleged shooter, identified as 23-year-old Paul Anthony Ciancia. The charges include murder of a federal officer and the commission of violence at an international airport. Ciancia remained hospitalized and, according to officials, was unresponsive. If convicted, he could face the death penalty.

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Travelers may retrieve their checked baggage from the baggage claim area of their airline carrier, according to CBS2’s Joy Benedict. Belongings that were left in the airport or Terminal 3 may be picked up at the airport police area of Terminal 3.