here is what we have going in my bldg.scheduled for sat air,one friend/T air/porter combo, T-S, two P/T bid air drivers, T-S, the 2 P/T bid air drivers, T-S. both have < 10 years bldg seniority.in addition, bldg has two P/T bid air drivers, M-friend, one w/15 yrs bldg seniority and 1 with 8 yrs bldg seniority.in addition, bldg has an exception air driver (preloader) w/36 yrs bldg seniority (25 yrs air exception). nearly every Saturday a fourth driver is needed. who is first in line to be asked to work? the M-friend P/T bid air people or the air exception driver (36 yrs and a preloader)? thx