Any priors here? I am assuming I don't need to hit MEPS and do another security clearance since the one I have is still active. I could be wrong. I really hope I don't have to live the hell that is MEPS again. Do SNA's need to take a flight physical to get a FS letter?
You have to have a pre-commissioning physical done. If this is done at MEPS where you're at, then yes, you'll have to visit them again. If you can get one done at a post/base near you, then go that route. As for your security clearance, if you already have one that is valid, that will be submitted with your other paperwork.