Navy Intel covers the full range of intelligence work. From air intelligence, imagery analysis, threat analysis for surface, sub surface, air, and a whole range of other items. If you google Navy Intel there is a load of data out there. The goal of the Academy is to commission Unrestricted Line Officers (SWO, subs, pilots, etc). Those who are found Not Physically Qualified (NPQ) during pre-commissioning physicals can select from the Restricted Line billets such as supply, intel, info ops (former crypto), etc. There are a variety of reasons Mids can be NPQd, but most are from injuries or illnesses they had while Mids, color blindness, height (some of the basketball players are really tall), or some other reason. Not sure on stats, but when I graduated I think we had about 30 Mids go restricted line mostly for color blindness or severe injuries/illnesses they sustained while Mids. But just because someone is NPQ'd does not mean the same thing in the USMC. Alot of Mids who were color blind went Marine Corps because there are more options for them. I had alot of friends who were once SWO qualified transferred to HR, supply and Intel. From my understanding this is not as easy to do now in the Navy, but it does not mean it is impossible!