I am a new hire starting class soon so I dont have the ability to fact check this myself. I was told by a friend that when a new category in a base opens, anyone can bid it regardless of seat lock. For example: The proposed BOS320 base opens in the next AE, I can bid and be awarded this if my seniority can hold it although my new hire assignment was NYC717 and a year hasn't passed? Doesn't sound right to me but what do I know?! Thanks for the responses.