TacVent: Cooling System

Jeff Shelton says throughout much of his law enforcement career he wouldn't wear body armor for the same reason that many officers refuse to wear their vests, heat and discomfort.Then came Nov. 1, 2013. Shelton, a sergeant with a Southern California law enforcement agency, was training that morning when a man started shooting people with an AR-15 in Terminal 3 of Los Angeles International Airport. Arriving at the airport, Shelton decided to wear his tactical body armor with the ceramic plates. A