Propably piggy-backing (but not in a brokeback mountain kind of way), but if you are going to live in a CAL domicile and like people. Go CAL. I had the same choice CAL vs FDX some years back and went FDX based largely on the fact I was not going to live in one of the CAL hubs. Who knew I'd be a genius short term.

Of course my 35 year CAL dad was not too sure of my choice. FDX cargo flying is basically "Navy-MAC". If you are military, imagine a mix of those two and you will understand FDX. Maybe mix in a dose of FBO flying. Very stable, good guys, outstanding furlough protection, but no glamour. Walk between the dumpsters, dodge the tugs, get to your hot (no A/C) plane, and eat your box lunch (no kidding actual box). No one brings you a hot lunch, or freshly baked cookie, or is even easy on the eyes. Years of night flying will make anyone grumpy. If you will receive some form of personal job satifaction from pax interaction you need to factor that in, if you don't care whether you're told "nice job captain", then FDX might be for you. I have no second guesses about my choice even if there was not a 9/11, but you will need to think through all the factors.