Can someone identify this unusual plane at SeaTac airport? I saw this plane at the SeaTac Airport and thought it was very unusual. The wings look too small to even be functional to me. What kind of plane is this and what is it used for?
There is a big clue right underneath the "Sea-Tac Airport" decal - it says


  FIRE RESCUE


It can be seen a little better on this image


source: wikimedia commons

It is a rig used for fire and evacuation training.


  A unique tool the department uses is an aircraft mock-up designed for aircraft approach, entry and tactics training on the airfield. The smoke generated is not harmful to the environment and provides a realistic challenge.
  source: https://www.portseattle.org/page/training


The image below appears to show it in use: