Our center has big problems with finding air drivers. The problem is, they never use them. They load it all on us causing us to have to break trace EVERYDAY. That makes your SPORH go down, miles go up, and PPHD down. You cant expect to ask a guy to drive air once a month when he has another job after the preload. UPS wants thier cake and eat it too. Forget it. Either use you air drivers everyday, or cause yourself headache. plain n simple.