You have no aircraft freeze on your initial assignment. If you desire as many have they have bid off the aircraft with in the first week at the company. All you need is a seniority number that can hold something else that you have bid for. People that were hired two weeks ago got ATL 767-300Er international while still in basic in doc. Yes, they are required to go through and compete their initial assignment training, but they got off of the mad dog. The next assignment/award comes with a two year seat lock. You, can still change bases though.