This is Good intell !! JSOC brief is here.
"JSOC units have reportedly been involved in a number of covert military operations over the last two decades. Some of these operations include providing assistance to Italian authorities during their search for kidnapped US Army Gen. James Dozier, participating in Operation Urgent Fury; the US invasion of Grenada, planning a rescue attempt of US hostages being held in Lebanon, rescuing hostages being held aboard the cruise liner Achille Lauro, participating in Operation Just Cause; the US intervention in Panama, directing US Scud hunting efforts during Operation Desert Storm, conducting operations in support of UN mandates in Somalia, and searching for suspected war criminals in the former Republic of Yugoslavia. "
PDD-25 is reported to exempt the Joint Special Operations Command from the Posse Comitatus Act of 1878 18USC Sec.1385, PL86-70, Sec. 17[d]. which makes it illegal for military and law enforcement to exercise jointly.
CNN reports, "The Strategic Support Branch (SSB) got its name in 2004 after operating under a different, undisclosed name before then, said the official, who confirmed the unit's existence and mission to CNN."