As soon as Rachel heard his voice, he stiffened up and tried not to look in Lance's direction. That was an immediate stalemate with himself though because he couldn't help it. Curious eyes glanced his way and there was an immediate flare of emotions - which was likely the reason one of the set lights popped and the bulb went pitch black.
Rachel swallowed, concerned about the light and apologized to one of the other crew members that was about to deal with it. Lance had that sort of effect on people and unfortunately, Rachel wasn't special enough to avoid it.