If they needed it for his job; and all communications types need high level security clearances, they would have a background investigation and if passed, given the appropriiate clearance. I’d have to guess there may have been some in that age group on the USS Pueblo. The reserve unit I joined in the late ‘60s was a group of cryptologists. I had a TS by 20 y/o.
Same here in the early 70’s. US Army 31S
The reserve unit I joined in the late ‘60s was a group of cryptologists. I had a TS by 20 y/o.
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I went to CT”R” SCO 1957 and had full BI while in Boot Camp (17yo) and received INT TS around 19 (if not earlier, not sure what was reqd for CT SCO) while aboard ship as RM and working as Cryptographer and around TS material...as they said, though most was need to know or ‘eyes only’.