I'm curious (and yes I did not read the 5000 pages on the other thread to find out)..
Are your schedules built such that you report for work and they own you for 17 days straight and you just expect to go wherever they need you, then you are off for 13 days?
I know a lot of the overseas contract jobs are like this, one I looked at was 20 days in country with one day of travel back home on each side, so you only got 8 days home a month.