Air Force Critical Care Nursing

I am a 30 y/o male graduating with my BSN in December and am considering the Air Force. I want to work in critical care (just finishing a six week ICU internship and loved it). I'm willing to work a med-surg type floor for a year or two before ICU. I'd like to hear about options for working critical care in the Air Force. Is it tough to get in to? Is there an extensive critical care training program? Does the Air Force require me to re-enlist if they put me through a training program? Where are some of the better ICU units located within the Air Force? Overseas? So many questions. ANY experience-based advice would a great help. Thank you