I was mostly concerned about the bag not showing or things missing. Nothing in the bag is of great value, though, sometimes things disappear anyways. I was not concerned about mugging. I just simply do not know what things are like in SGN.
Because both of us are or were UA employees we seldom check bags. Not out of fear, simply because non-reving is a bit different than what most FTers do.
For the record, I feel that SFO's baggage handling is as reliable and secure as any first world hub.
kevincrumbs and jiejie thank you.
JohnPaul