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TSA Behavior Detection Officer Gerardo Hernandez as seen in a family photo from June of 2013. Hernandez was killed by a gunman in Terminal 3 at Los Angeles International Airport. Los Angeles, CA. 11/2/2013. photo by (John McCoy/Los Angeles Daily News) ( LAX SHOOTING )

The Los Angeles Sheriff bagpipers arrive at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Gerardo who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

TSA officers fold a giant US flag at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Gerardo who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Wounded TSA officer Tony Grigsby sits after the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Gerardo who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

LAX TSA supervisory officers Danielle Arocho and Lisandro Jimenez sit together alone after the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Wounded TSA officer Tony Grigsby arrives for the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The family of slain TSA officer Gerardo Hernandez arrive at the memorial at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The Los Angeles Sheriff bagpipers perform at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Attorney General Eric Holder speaks at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The flag for slain TSA officer Gerardo Hernandez is carried by TSA officers at the memorial at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The flag for slain TSA officer Gerardo Hernandez is presented by TSA officers at the memorial at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Hundreds of law enforcement officers filled the Los Angeles Sports arena for the memorial Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

TSA officers bring in the flag for the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Hundreds of law enforcement officers filled the Los Angeles Sports arena for the memorial Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The TSA LAX chorus sings at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Los Angeles Mayor Eric Garcetti speaks at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Taps are played at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

TSA officers present Acting Secretary of U.S. Homeland Security, Ran Beers with the flag for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Ana Hernandez, with children Stephanie and Luis watch look on as the Sheriff bagpipers play at the memorial for their husband and father, Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Hundreds TSA officers filled the Los Angeles Sports arena for the memorial Tuesday, November 12, 2013. A public memorial was held for Officer Gerardo who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

The memorial service for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

Wounded TSA officer Tony Grigsby, center, and other TSA officers at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

TSA officer hug at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle, Grigsby was wounded in the attack. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

TSA officers fold a giant US flag at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )

A giant US flag at the memorial for slain TSA officer Gerardo Hernandez at the Los Angeles Sports Arena Tuesday, November 12, 2013. A public memorial was held for Officer Hernandez who was killed at LAX when a gunman entered terminal 3 and opened fire with a semi-automatic rifle. ( Photo by David Crane/Los Angeles Daily News ) ( 1113-NWS_LDN-L-TSA-MEMORIAL-DC )