It will be the "Classifier" who will give you a school. I would not sign a contract unless there is a school guarantee you are interested in. As a gun guy you might even think of being a Gunners Mate.
I was Navy Air, had a blast and have seen things that would make most peoples head spin. heh, heh.
It's a big world out there. I would not trade anything for the places I've been and the people I've seen. Sometimes people get a little cranky thinking how bad it is here. They have not seen how some other people live. Coming home to the US is alaways a relief.
Depending on how you do on the ASVAB will give the "Classifier" the raw scores with which he can offer you schools.
If you are interested in EOD, I believe there are "rates" or job skills they pull from. As a AME I wasn't able to move onto some of the more fun jobs and besides the Navy was always a little short on us.
Remember this though, the Classifier is like a closer and it looks bad when he looses a sale. Seems like some of the better schools come open towards the end of the month.
Just so you know I was a recruiter over 25 years ago. It was hard duty but my reward was going to China Lake. There I was involved in doing a eval on the then new F/A-18. We called it ugly and the Navy still bought it. The problems we saw then has been improved with the Super 18 which I never worked on. That squardron about worked me to death.
Another little known fact is I loaded the pilots seat for the movie Flight of the Intruder. Movie sucked but it was a fun 3 days of hard work for 3 seconds of film. I was back at China Lake then but working for the Base. That was a fun filled tour. I was also involved in the NACES seat which is now the Navy Standard Ejection Seat. I was the poor SOB who signed the seat was ready for a test shot out of the back of our white F-4 and was safe for flight. I did a total of 17 of those. I also shot M-14's for the base rifle team then as well. I was ordered to Camp Perry in 1990. Heh Heh. Free ammo and free match grade rifles are hard to beat.
Guns have two enemies. Rust and Politicians. Those who make war on the Police will have to become friends with the criminals.