Go talk with a recruiter at your local recruiting station. They will review your back ground both criminal and educational and from there depending on your test scores you could choose between different types of employment if they are available.
There is no interview. Prepare for the ASVAB before you take it. Make sure your bills are current and nothing in collection. This MOS requires a Top Secret clearance. If you have passed due debts that are in collection you will have to pay them off first. Also a recent criminal history may prohibit a clearance.
Interview questions [1]
Question 1
The application process for a Top Secret clearance is very detailed you have to know a lot of information going back ten years. previous employers, addresses and dates...no gaps