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Travelers wait in line to have their boarding passes checked at a security screening area of American Airlines terminal at Los Angeles International Airport (LAX) on November 23, 2011 in Los Angeles, California. Two current and two former TSA employees were arrested recently for suspicion that they accepted bribes and helped smuggle narcotics into the U.S.
Three people were wounded and one man was killed in Friday's shooting at LAX.
The alleged gunman, 23-year-old Paul Ciancia, remains sedated at Ronald Reagan UCLA Medical Center. Because of his condition, officials have yet to establish any motivation for the attack.
Meanwhile, flights have returned to normal at LAX but there's an increased security presence. Friday's incident has raised questions about just how secure airports actually are.
For more on this, we turn to Ralph Basham, who served as the first chief of staff of the TSA and founded the security advisory service, Command Consulting Group.