Or as the Engineer from TF2 said:

Hey look, buddy. I'm an engineer, that means I solve problems. Not problems like "What is beauty?", 'cause that would fall within the purview of your conundrums of philosophy. I solve practical problems! For instance, how am I gonna stop some big mean Mother-Hubbard from tearin' me a structurally superfluous new behind? The answer? Use a gun. And if that don't work, use more gun. Like this heavy caliber, tripod-mounted, little ol' number designed by me, built by me, and you'd best hope... not pointed at you.

I could see security being forced to do the manual labor that the engineers need done but don't have the stamina to do efficiently. There should be more of that kind of cooperation between their teams. What the hell is security even doing 90% of the time when there's no threat? Regular patrols and checks wouldn't take even half of their man hours.