The airport was operating normally Monday morning.
Suspect's family responds
Ciancia's family, in a statement read Monday afternoon by attorney John Jordan in New Jersey, said they were "shocked and numbed by the tragic events of last Friday."
"It is most important for us as a family to express our deep and sincere sympathy to the Hernandez family," the Ciancia family said. "(By) all accounts, Officer Hernandez was an exemplary member of the law enforcement community and a good family man. Our hearts go out to his family and many others who grieve his passing.
"We wish to convey, too, our hopes that those who were wounded during this incident will experience quick and full recoveries. We also regret the inconvenience experienced by thousands of travelers as well as the administration and the employees of the Los Angeles airport."
The Ciancia family said they would "continue to love and care for" Paul.
"We will support him during the difficult times ahead. While we do not mean to minimize the grief and distress experienced by many other families, we hope that the public will understand that this is a very difficult time for our family, too," the family said.
If convicted, Ciancia could face the death penalty or life in prison without parole. The U.S. attorney general would decide whether to pursue a death sentence.
TSA Administrator John Pistole said the shooting has prompted a review of security protocol with partner agencies.
McCaul said better coordination with local law enforcement could improve security at checkpoints.
But the congressman acknowledged that "it's very difficult to stop these types of attacks."
"It's almost like an open shopping mall," he said.