Can't tell for sure- opened in 1976 with Gunny Hathcock as NCOIC-- This brave Gyrene exemplifies the "never give up" espirit de Corps we have and treasure- in "grunt" terms he is utilizing a "FIR"- that's Field Improvised Rest to you Non-Quals- (below 190 out of 250 on qual day) then only think in USMC parlance lower than a "Non-Qual" is whale poop!! Semper Fi!!