I am a second year HPSP medical student with the Air Force, and had a few questions about rotations and residencies. The first question that I had was concerning residencies. When you are applying for a military residency, do you have to stay within the AF, or can you apply to any military residency, regardless of what service it is?? I am pretty clueless on how this all works, so any help would be greatly appreciated. Thanks everyone!!