It's just one of those friendly things to do and, in the end, will not only save thousands of dollars in fuel costs - but may well save lives...um...yours. So really, a small, "Hello, I'm a friendly Bulgarian pilot on my way to Eilat" works wonders. Try it some time, ok?
Air Force jets were scrambled to intercept an unidentified executive jet en route from Bulgaria to Eilat. The pilot eventually did identify himself and the jets are currently escorting the plane to the Eilat airport.