With a simple nod, Opus was underway, selecting the human guard as his target. Grabbing the offered surgical wire, he triple bound it together in a thick rope, and began to move among the crates, careful to avoid detection and moving silently, with purpose. One guard caught a glimpse of something out of the corner of his eye, and snapped towards it, weapon ready. But all he saw was empty wall between two crates. Letting out a perplexed "huh...", he went back to his duties as Opus hid behind the cloak gauntlet, separated between them by the field's shimmering glimmer. 

Once clear, he hopped up the crates, and stalked the chosen quarry along the catwalk, like an animal stalks it's prey, before the guard set his rifle down and sat on a box, lighting a cigarette. The agent tied the wire into a loop at the end, and made eye contact with Rareth, nodding and letting her know he was ready.