To start AF UPT training you have to be IN UPT by 30 (selected, gone to OTS, IFS etc) and in your class started by 30, so typically they dont look at people over like 28 bc of how long it takes...I heard there are waivers but I have never met anyone with one. I dont know anything about the army or navy, but I think its older to be a NAV in the AF... If you have questions on the reserves/guard shoot me a PM, Ive helped a lot of my former airline friends get started.