Bob,
Why dont you ask a question that is hard to answer???
Ok, Ill try to help:
How is your eyesight?
If not the best and I dont know the requirements today, if you need glasses forget everything except for choppers.
ROTC or any military associated program will only help and may also tell you that the life you envision is not for you.
Next, you need a College degree, best ones I cant tell you but any recruiter can. Look for a GOOD recruiter and not just one waiting to get out.
Navy is probably the best, wish I went that way but a longer committment. Air Force is great if you meet the requirements also. Cant comment on other breanches but you can find out for yourself.
Just be sure you know what you want. No one in my family was in the Military and except for my recruiter, no body knew sh*t!
Hope this helps. Its not easy but anything worth while isnt.
Any more questions, just ask or PM me and Ill try to help or steer you in the right direction.