"Oh, yeah?" Oliver couldn't help it. At the mention of doing something useful, his mind's eye conjured an image of Jerome making a beeline for the barrier and getting caught in it. He found himself glancing towards the fence, tall, but likely scalable if someone was feeling particularly motivated. He had absolutely no doubt that there was a barrier present, and really didn't want to find out exactly where they'd planted it. The idea of someone getting caught on the other side of that tall fence and out of reach put a pit in his gut.
"What were you thinkin'?" He asked, managing to sound more curious than apprehensive.