I agree with Stealth there are just too many variables especially when it comes to the rated world. For example when Bullet flew the F15E out of Elmendorf they were PACAF and the 3 yrs there he never went to the sandbox. However, when we were stationed at Seymour he would go for 120 days every 18 months.
As Stealth stated a lot has to do with when you arrive. DS flies the 130J. When he arrived last Feb half the squadron was on a 120 day deployment, thus he did not go on that rotation. One yr later and he was deployed for 120 days. However the way it works for them is that they do 2 months in the deployment zone and then rotate the planes back to Germany for support missions...i.e. they would fly in supplies/parts to different places.
At his base there are 2 130J Op. units. They basically will rotate right after each other. Fencers DS is a 130J pilot at the same base, but different unit. He was sent only for the Germany part so they could rotate the other guys back faster. As his squadron was rotating into Germany our DSs was rotating into the theater. Just like when DS rotated into Germany the next squadron was rotating into the theater. So on and so forth until your unit is tagged again.
~ DS already knew when he got back home when their tentative re-deployment date/month would be.
Now with all that said, I will say don't be so anxious to deploy because what you don't realize is depending on your airframe you could be doing a lot of TDYs too. Prior to going on the deployment he was sent for a 2 week TDY to get ready for the deployment. Came home and deployed 2 weeks later. DS returned home on a Monday after 5 months of being deployed. 10 days later they sent him to a 3 week upgrade school (TDY). Came home and while out shopping on a Sunday for his 1st baby's crib the squadron called him and said he needed to go on a 7 day TDY Monday.
~ My point is the 1st 7 1/2 months of my DILs pregnancy he may have been home 3 weeks in total!
~~ Of course the squadron knew she was pregnant and typically they do not want to send any pilots on TDY or deployments at the tail end of a pregnancy or right after the baby is born.
~~~ Fencers DS was deployed for 60 days when his wife was pregnant too, and if memory serves me correctly he came home about 1 month before the baby was due. His unit is on rotation again and if he goes, his DD would be @ 9 months. Our DS is on the hit list to go again and his DD will only be 6 months old when he leaves for his 2nd 120 day deployment.
Finally, want to know why the AF is losing pilots at such a high rate is because of the pace of deployments and TDYs. One day sooner or later you will be happily married with kids, and probably prior to when you can walk (9 yrs after you wing...if you are AFROTC you can expect to wait close to a yr before UPT start, plus 1 yr for UPT and the 9....you are looking at 11 yrs or around 34-35 yo) Now when you think about all of those TDYs for things like Green Flag, taking the jet to safety if a hurricane is coming, and than your 120 day rotation every other yr., you too may say I am more than happy to become a busdriver in the sky (airlines) at a lower pay for several years than take that 250K bonus for me to stay until 20 so I can be home with my family for ...I don't know silly things like birthdays, Halloween, let alone Thanksgiving or Christmas.
~ Bullet missed every Halloween from the time our youngest was 5 months old until he was 8. He missed half of our 3 kids birthdays. Our DDs 1st Father Daughter dance, she went with my FIL because he was deployed. Our 7th wedding anniversary (my favorite memory) was at a Denny's while we PCSd.
I get you want to serve, but as you can see just through Stealth, Fencer, my DS and of course my DH, as fun as it might be to think about traveling all across the globe and doing these missions, it can become less fun every time you pack those bags. Just saying these examples are not uncommon, but more common than you think or realize at this time.