I am just a pax (slf) too. And I will be very happy to have an Air Marshall on the plane with me. These people are trained in handgun marksmanship and are of high character. Most are ex-military or ex-police and are mostly mature individuals.
Most on this board seem not to remember that armed Air Marshalls are not new to US flagged carriers. I flew with them in the '70s with no problems.
Back on subject - if I hear any "funny" comments from ANYONE, especially Mom & Pop Vacationer, I will turn their ass in as fast as I can!! There has NEVEN been anything remotely "funny" about "hi-jack"; "gun"; "bomb", etc. and any idiot that thinks there is does NOT need to be on the same plane as I am on. Do I travel a lot? Yes, 122 segments last year. Don't try being "funny" within my hearing or your ass is grass, as we say over here in 'merica.
dAAvid -