FWIW, SFO uses a private contractor to conduct security in lieu of TSA. I've noticed that they do not have the "TSA" shoulder marks on their uniforms that actu

FWIW, SFO uses a private contractor to conduct security in lieu of TSA. I've noticed that they do not have the "TSA" shoulder marks on their uniforms that actual TSA have at other airports. Presumably SFO hired them because they were better than TSA in some respect, if that tells you anything. :) It looks like several airports that were contracting them have since switched to another contractor, though: https://en.wikipedia.org/wiki/Covenant_Aviation_Security#Former_locations https://en.wikipedia.org/wiki/Covenant_Aviation_Security#For...