been driving the same air route for about 1 1/2 years now. At the time i started their was another air driver on a different route as mine. To my knowledge, he/she went RTD driving then back to working the night shift i believe. I bid on this route and won it from another driver that went f/t driving...but last week i was told that this other air driver was coming back and that i would be bumped back to preload. Granted, i know he does have more senority than me, but can they do this since i won the bid?