Faye heard Dave's command loud and clear. She couldn't see what the others were up to, but she assumed that Dave only would have ordered such a thing if her crew were well away from that ship on the lift. Promptly after making the order, Faye fires the cannon with precision, aiming to make large holes that would sink the ship quickly. As soon as that one was done, Faye prepared the next shot, and she's set it off as soon as it was ready.