Hey Griz -
You forgot that they have the best and fastest maintenance in the world. I've seen UPS start loading an ad hoc, mechanic shows up and a serious phase is done before UPS finishes loading. Man they're good!
P.S. I did not get taken advantage of by this company, and I am not bitter.
In all fairness, this was many years ago and things have changed hands several times, last I heard they had some decent folks running things, but who knows.