The four wheels in the foreground are connected to electric switches to control the electric drives: Turn the thrusters, Thrusters on/off, Compressor and turn the main cannon.
Right in front of the two position lights, there's another pneumatic valve. It directs the air flow down to the container.
On both sides, there are pneumatic valves to control the functions. Front gear in/out, rear gear in/out, front container locks in/out, rear container locks in/out. The greeblies on the faceplate went through at least 5 iterations till they looked like that. The plate dramatically contributes to the overall sturdiness of the main fuselage.
Closeup off the folded landing gear. I like the design, cause it supports the ship both retracted and deployed. In both positions no pressure is needed to hold the weight of the ship. Pressure is just needed when you pick up the ship to hold the feet in retracted position.