This is a 30/60/90 day Survey.  Each question will ask you if you can deploy for 30 days during that month.  You can choose as many months as you would like for your 30 day tours and they do not have to be consecutive.  If you would like to deploy for 60 days, you must choose consecutive months, for example January and February.  If you wish to deploy for 90 days, you must choose 3 Consecutive months for example, March, April, May.  If you wish a longer deployment, you will be allowed to extend beyond 90 days and if you would like to work until the End of the Mission (EOM), please make sure you check that box "yes" when you get to that question.