If you are on a military base then you fall under federal jurisdiction
CID will forward the report to the AUSA (Assistant US Attorney) for the district in which the base is located.
The AUSA has the power to prosecute the case in federal court
What you describe sounds like they may charge illegal possession of a controlled substance. If you have prescription drugs and do not have a valid prescription for them, that can be prosecuted, either as a misdemeanor
or as a felony
Now the way you describe this, if you were not keeping the drugs for yourself but merely holding them so your father was not able to abuse them? That would not be a crime.
So if that is the case, I would expect your attorney could dispose of the charges quickly, hopefully without even going to trial
But you will need a lawyer for this if they wind up charging you.
You will know if they charge you...they would mail you a summons to appear in federal court. IF that happens you may want to hire a lawyer to assist you with this