You want to be authorized by a national government to conduct cyber-warfare activities on their behalf? I think these analogies are becoming a bit strained, U.S. Coast Guard handles law enforcement on the seas, not the Navy.
Well, not strictly cyber-warfare warfare. And military, not law enforcement; at least, military-like activities against non-state actors. (Ron Paul actually proposed this both as the response to 9-11 and the Somali Pirates...)
Isn't it alleged that the chinese government does exactly that?
I seem to remember stories about quasi-government hacker groups. Of course that may very well have been spin that allowed those doing that reporting to blame the chinese government for the actions of their civilians.