U.S. Special Forces
SEALs, USAFSoF, Green Berets, Delta Force.
JSOC's Secretive Delta Force Operators on the Ground for El Chapo Capture | SOFREP
This type of arrangement is hardly unprecedented, as Delta Force also worked in the shadows during the search for, and eventual killing of, Pablo Escabar in Colombia. They've also served in advisory capacities during hostage-rescue missions in places as diverse as Sudan and Peru.