This could be done on a voluntary basis by the airlines. So, if you wanna save the $8 and fly somewhere else you can. Also, if there is concern about the security officer being the first target, it's not neccesary for them to be in uniform. Could be "stealth" mode. I'd feel better havin' trained pros who would be held accountable for their actions. I realize most civilians who would be licensed under such a program would be good guys/gals, but one slip-up and revocation of all licenses.