It is a really great book. It is amazing how demanding and difficult the AF Combat Controller training is, SEAL++ They have to be able to keep up with special forces operators in most of their combat mode, including scuba and parachute, combat training, communications specialist, be able to call in fire support from any source or branch (air, artillary, rocket, guns, etc.) and even use portable equipment to set up ad hoc airports on the fly. An amazingly complex skill set.