US Army Special Forces are indeed the way to go for all purpose special operations duties. United States Marine Corps Force Reconnaissance (FORECON) is far to small with the whole Fleet Marine Force, Atlantic (FMFLANT) having just two companies of FORECON in the relevant era (2nd and 3rd Force Reconnaissance Company). As for the fictivity of 11th SFG, the United States Army Reserve begs to differ. Although 11th and 12th SFG were deactivated from USAR in September 1994 (
https://www.jstor.org/stable/43976149), many members joined the 19th and 20th SFG of the Army National Guard. Reactivating USAR SFG would thus simply mean to federalize both SFG and transfer personnel to different units. That's not difficult to do and just three years after inactivation, most of the personnel would still be available.
As usual, the US forces are transparrent about their doings and there is a social media network for former US army members, which can be filtered by unit served. Pretty interesting stuff:
https://army.togetherweserved.com/army/ ... t&ID=29525#!.