[hoosiermama]

That's what a friend told me who worked with classified papers.....Papers are marked...He would know he had classified material.

[Cicero]

Of course. I was a Hawk Missile Acquisition Radar repairman when I was in the army, but I also spent some time as our company's Classified Document Clerk. Among other things, that meant burning classified documents that were no longer needed, which I did in a 55-gallon oil drum out back. Documents were clearly marked "CLASSIFIED" or "SECRET" on every page in large letters.