This was one of the earliest model imported into Oni, a.k.a. Silly World. Issues: the bnv for this model is not complete, there are no ghost quads, so AI's can't patrol. Some areas uses a single sided polygon, so in Oni, one side is visible, the other is not. This uses level 5 The Airport Part Deux, flags 0 to 3 are available to explore.
The original model was made by R. Anthony at the 3D Warehouse by Sketchup.