Here are a couple of the Ork Airfield Defence Force airfield vehicles.
The role of these vehicles is to support the function of the Flyboyz, but they are armed with light weapons and/or AAA weapons.
One of the models is armed with a flak weapon from a Flakwagon. The other is towing a Big Gunz trailer with two bombs (lifted from a FW Ork Bomma).
I am using the same basing structure as my Feral Orks to allow the models to be used with either army.
* I know a more Orkish name would be more in keeping with the fluff…