Sorry, but it's the RC pilot's job to be aware of not just his plane but everything else that is within harm's reach. The spotter is SUPPLEMENTARY protection.

If you're flying in such a way to be oblivious to a full scale plane in the area, then it's time to change your routine...such as flying the plane far enough away so that you can hear a plane approaching. Simple.

Yes, I've flown 2 demos at the Arlington Airport, but they were with C/L combat planes.

You can look me up on you tube if you're curious or want to write a book about me. I've got a few examples of what I fly posted there.

I've got a build thread running in the 1/2A forum also.