You are the victim of an extremely poor packaging job....I doubt UPS (or anyone for that matter) would accept any liability for what is documented in those photos

-used carton (note the 3 different types of tape on the outside)
-the lid, and possibly the box has been poorly spliced together
- the rolls of plastic and paper in side that are supposed to serve as packing, are totally insufficient for the jet they are supposed to protect.
- the jet is not cradled so that it is at least 4" away from the inner carton surfaces
- the volume of packing is insufficient to support the carton and prevent any air voids
-there are no internal bulkheads to support the ends. lid, and sides from the weight of other boxes that are going to be piled on top of it.
- there is no shock absorbing media to protect against drops and bumps

and finally, who would ship a jet with the whip antenna still attached ?

Sorry your jet got broke, but you will need to go back to the shipper on this one...

The reality is that a well packed model should survive a drop from a tailgate, and you should be able to stand on it without damaging the contents - no matter who your carrier of choice is. There is no such thing as too much or too strong !