[tongue-tied]

hmmm....maybe someone with access to the governing directives can help me here, but I still disagree.

If DOD classifies something, they are the only ones that can change the classification level. If DOJ classifies something, only they can declassify, etc.

There are time limitations, whereby an item is automatically declassified after a certain amount of time unless reclassified by the original classifying authority, but otherwise I think only the original can decide it is no longer required to be classified.

[tongue-tied]

http://neds.daps.dla.mil/Directives/dirindex.html

http://www.dtic.mil/whs/directives/

For some reason, I cannot remember the number of the instruction. (Beer?) But here are the DON and DOD sources to look it up.

[One_who_hopes_to_know]

True DOD and DOJ do not mess in each others business.

However both DOD and DOJ report to the President. They are his departments.