How do I figure out my username?

[navyvolleyballgirl]

I've been trying to log on for a while but every username I try isn't working. It has no way to reset username. I need to print out papers for my medical exam at 11 today. How do I figure out my username?

 

[NJROTC-CC]

https://www.dodmets.com/LoginApplicant.aspx

That link says username is SS#

 

[Heatherg21]

I believe it is SS# with dashes, good luck.