At 17 you are to old OMHO
I is a great org.
I joined at the age of 12 and left at 18 to join the USAF in 1980
I feel it was a great part of my young life and got a lot out of it, but a 17 year old... I really don't think you will enjoy it very much.
I am thinking of going back in, time permitting. I found out as a pilot they will let me join as a 1st Lt. I have a good friend who was also a cadet years ago who is a pilot and an AP/IA and they will sign him up as a Capt.
I guess they need A&P's more then pile its
They must have plenty of the lator.