Gyn rushed to the cabin where the controls were for the airship. He had wholly reworked everything so that the Captain could control everything from this space, leaving the crew free to operate the weapons.
Red crystals embedded into the walls all over the airship suddenly began to pulse in crimson colours. The monsters onboard quickly reacted to this and dropped everything that they were doing!
Gyn had informed them all when they boarded that this was the signal to prepare for battle. Why did he use pulsing red gems? Because it was more noticeable, of course! This way, it was a visual cue so that they could still hear orders clearly.
The monsters rushed for the cannons that were connected externally to the hull. Trap doors opened up as orcs, and goblins shimmied down the cannon mounts hundreds of feet in the air with ropes tied around their waist.