Anybody know what MOSs do not require a security clearance?

This is your job, you can help him, and good on ya for making the effort. I think it's relatively uncommon for a particular MOS to require a security clearance prior to attending a DMOSQ school. Security clearances are generally tied to positions, not job specialties. If you need other resources, send me a message.

That's not your job, and you can't help him. They will be reclassed based on what jobs have class seats. You can pull a list of all the jobs without clearances and it doesn't mean any one of the jobs he picks will be available. This Soldier needs to sit down with their Career Counselor as soon as they lose their clearance.

You may be thinking that you can help him by giving him some good ideas, but you can't, because you don't have access to the AIT open class seat list and anything you say will just be false hope and lead to disappointment. 90% of the time that Soldier is getting 88M or 92Y.

There's a new DoD Policy that came out a year ago that all military positions were designated as "national security positions regardless whether or not the Servicemember requires access to classified information. All military personnel must obtain and maintain a minimum of a favorably adjudicated NACLC (now knowns as Tier 3 or T3) background investigation." A T3 is the investigation for Secret.

So basically, if someone gets a clearance revoked, they're not staying in the military with this new guidance. Even those not US citizens have to be able to maintain a favorable T3. They just can't have a clearance adjudicated until they get citizenship.

That new policy was to be incorporated into AR 380-67 as well.

That memo does say "Military members whom the DoD Consolidated Adjudications Facility (CAF) intends to deny or revoke a favorable national security eligibility determination will be afforded due process prior to any final unfavorable determination." Which, anyone who gets a letter of intent to deny or revoke, there is an appeal process. But once DoD CAF decides to revoke or deny, that's pretty much it. I think if someone is denied or revoked (maybe just denied) they have to wait a year to try to reapply for a clearance but I'm iffy on that one. I'd have to go look it up again.

You said "is about to lose his clearance." He should be talking to his S2 about all this because if there's just been a letter of intent to revoke, it's not revoked yet. His S2 should be explaining this all to him.

If he already did the paperwork for the LOI, I think a revocation can be appealed. Again that's through S2.