Security clearance level?

[Jerbrooks142]

I was just recently sworn in and I have a question. I will be a naval combat information operator with the reserves. What level of security clearance will I have to get ? I have the initial reliability clearance. But during the enrollment ceremony the recruiter mentioned some of us will have to upgrade our security clearance to secret or top secret I have secret for my civilian job and I just want to prepare my self by gathering the required information to get the clearance needed any info is great thank you for the help.