FOG (and ex-USAF) here...
Tim, I served 1 tour in the USAF, and volunteered for "SEA". Somehow, instead I was stationed at Nellis AFB, outside of Vegas for 3 years, but I spent a lot of time TDY'd to other places during my tour. I worked for Ma Bell prior to my enlistment in the AF, and when I got out, I went gladly back to my old job at home. As much as I enjoyed my time in the AF, I was glad to go back to civilian life. After 31 years with the Bell System, retiring and working a full-time job now, I have few regrets.
If it were me, I'd definately take a long look at the pharmacy deal first. If you decide running a business isn't for you, you can always enlist later, and have a little more "practical" experience. And you can always join the "reserves" in the meantime, if you want to. Even up in Northern Michigan, my middle son was in the National Guard, while he was living in a very small town.
But from my perspective, it's nice to be able to plan for the future. running a business in a small town, has some nice perks - being home most of the time, and having a chance to put money away for yourself and your family.
Don't get me wrong - I would never run someone down because they want to serve their country. I did it, and have no problem with my boys doing it either. But each person has to decide if that is their "bowl of rice".
Good luck with whatever decision you make, Tim!!