I work for a large US airline and will tell you that you’re not correct.
I was a flight attendant for 25 years. Tell me where I am wrong.
By God, you call me a liar, you need to respond. But, here are some things for you to dwell on:
http://www.wsmv.com/story/19916199/thousands-go-unscreened-into-secure-areas-at-nashville-airport
http://tsanewsblog.com/10677/news/airport-airline-workers-abuse-security-privileges/
http://www.khou.com/story/news/investigations/2014/07/24/12232974/
YOU are not correct.