It might be worth noting what goes into a Top Secret (or higher) clearance here:

When I went to BCT, I was going in as a 35W—Signals Intercept/Intelligence/Linguist (that’s what it was at the time, anyway; the designation might have changed).

My MOS required a Top Secret clearance before I ever stepped foot into a BCT…

Trump is also looking to revoke the security clearance of Frederick Douglass.