The USAF Hercules is used for ground attack and carries a Gatling gun and a 105mm Howitzer mounted in the side.

The Gatling gun operates using the Horn H key, the Howitzer uses the Bell B key and the rear door uses the V key.

The Aircraft Action Trigger can be set on the invisible track to operate animations such as the Howitzer firing, you can see the shell leaving the barrel. The gun has appropriate sound, smoke and recoil.