TSA officers pause for a moment of silence to remember a fellow officer killed in the line of duty at Los Angeles International Airport (LAX) Friday, November 1, 2013.

Lambert-St. Louis International Airport was one of many airports across the country to hold a moment of silence in memory of fallen Transportation Security Administration (TSA) Officer Gerardo Hernandez Friday. Officer Hernandez was killed in the line of duty when a gunman went on a rampage targeting TSA officers at Los Angeles International Airport. TSA Federal Security Director Bill Switzer made the announcement to halt security checkpoint operations in St. Louis at 11:20 a.m. CST in honor of Hernandez. It was a somber moment for TSA officers and passengers.