Once he made sure that the room was secure, he noticed the others already waiting down by the side.  He frowned, not having expected this, but able to deal with it.  He hooked the grappling gun back onto the rooftop, setting it to start to lower again so that the rest of them could ride it up.  However, he gestured for them to hurry, and watched the inside to make sure nothing attempted to sneak its way around from the inside.