Combat Engineers from the 744th Engineer Battalion prep C-4 on a demo range by tying detonation chord onto transmission line, which is connected to the blast initiator July 24, 2014 at Fort Hunter Liggett, Calif. This is the ultimate training environment for a combat engineer, because the range allowed for the detonation of multiple kinds of explosives, including but not limited to C-4, crater charges, make-shift bangalore devices and shape charges. The average brick of C-4 the combat engineers detonated was approximately three pounds of high intensity explosives. (U.S. Army Reserve Photo by Pfc. Brian N. Lang / 205TH Press Camp Headquarters)