RE: Whose air is it?
First off all ‘Full Scale’ aircraft have the right of way over a model.
Next, are the laws regarding Low flying AC. There are very specific rules governing this sort of activity – something about people getting upset when a plane falls on their house, sonic booms breaking windows and the noise causes their chickens to stop laying eggs etc. Every country has their own regulations – check them out and act accordingly.
As a general rule of thumb, Military AC training in Low Level activities are allowed to do so only in Military Training Areas – NOT over your house. (see above)
If you have a concern, try calling the local base and ask them to stop training over your house, try supplying photos of the AC complete with a date stamp – it will go a long way to proving your case as well as who was flying the AC.
As always, be polite and have proof. Things work better that way.