WOW!! That's quite a background! And I never dreamt the ER would use security guards as an extra pair of hands!
You'll find quite a few military types hanging around this site. There's one nurse anethesist who's been working over in Iraq, and has posted some fascinating pictures taken in the OR over there. If you're interested, the search engine on this site is really good at finding stuff like that.
I've worked in the nursery business myself. Put myself through nursing school working as a gardener for a large retail nursery, then for the City of Toronto. Loved the work! Got tired of teaching, though. Too many whiney students who weren't interested in learning. Got tired of playing policeman instead of teaching. Not that there weren't rewarding moments, there certainly were....
Also did security guard work at large public events, then got my P.I. license and did retail investigation for awhile (catching shoplifters). Hmmm....good background for a mod, I guess!!