Chunks is not the only quad bods in the Marine Corps. The XO for 2/3 for example is a "quad bods". He was a SSgt at 1st Force before he commissioned and has completed ARS, Jump, Dive, MFF, Ranger, Royal Marine Commando, French Commando, and the entire 18B version of the Q course. I am sure there are some more running around that I don't know about.