It'd be easy enough if they timed it properly, he figured. However, that didn't change the fact that they had to worry about the chance of them being exposed to kryptonite when they got in there. Suddenly he found himself wondering why he hadn't bothered to invite Oliver to go with them after all. Shaking his head in resignation, he looked to Kara and muttered, "then we'll have to be as careful as possible. I don't want to get trapped in there."
Double checking the area ahead for the guards positions, he shot Kara one final warning look before lunging forward and quickly moving off toward the contained room.