[demlosers]

No he can't. Usually, only the originator of the information who classified it initially can downgrade it.

Yes he can.

That's the "usual" case that the OPR does it. But someone in his chain-of-command can also downgrade it

[kabar]

I disagree. Here are the rules: EXECUTIVE ORDER 13292 - FURTHER AMENDMENT TO EXECUTIVE ORDER 12958, AS AMENDED, CLASSIFIED NATIONAL SECURITY INFORMATION