dual-cool
adj.— «The recipients of both parachutist and diver insignia are considered “dual-qualified” (or “dual-cool”) full-fledged “Reconnaissance Marines.”» —by Charles D. Melson Marine Recon 1940-90 Sept. 12, 1994. (source: Double-Tongued Dictionary)
“triple threat”: Marines who are also Ranger qualified, and last, but not least, “Quad bodies”. These are triple threat guys who have done an exchange tour either with the British or Australian Marines. Very few of these guys around.