STN used to be a base for new hires and the only way to get the company to pay for your ticket and hotel was to waive your right to two days off between trips and agree to 17 working days in a row.
Today you can still agree to the waiver and 17 days in a row but it is up to crew planning if they will award it to you or not. The two most likely scenarios for you to be working more than 17 days in a row is first working the monthly transition and second is involuntary extension. The latter can only be up to four days under certain conditions. It's up to you to ask why or just roll over and assume it's ok. Anything more than four days is pilot induced.
The Polar/Atlas contract is now going to an arbitrator and hopefully it will be in effect by spring '11.