Airports across the country will hold a moment of silence to honor the TSA officer killed by a rampaging gunman at Los Angeles International Airport.

The Transportation Security Administration says security checkpoint operations will stop at hundreds of U.S. airports at 9:20 a.m. PST (12:20 p.m. EST) Friday — the moment that Gerardo Hernandez was shot last week.

The 39-year-old father of two was the first TSA officer killed in the line of duty. A public memorial service for Hernandez will be held Tuesday morning at the Los Angeles Memorial Sports Arena.

Authorities say the alleged gunman, Paul Ciancia, targeted TSA officers. Two other TSA officers and a bystander were wounded before police shot Ciancia, who remains hospitalized.

Read More: How Los Angeles International Airport Turned to Twitter During Attack

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Tags: lax, tsa
Photo Credit: TSA shooting victim Tony Grigsby, who is escorted by his mother Faye Maye, left, and grandmother Juanita Davis, walks slowly away from the media after a press conference where he made a statement in Los Angeles, California, on Monday, November 4, 2013. Wally Skalij / Los Angeles Times/MCT