people who flew aircraft less than legal, without radios
Lest anyone draw the wrong conclusion from this - its perfectly legal to fly aircraft without radios as long as flight is restricted to class G airspace and airfields that are non-radio.
Sorry, that was typographical, I was not suggesting that it was illegal to fly without a radio.
I would add that I have always been of the opinion (being an opinionated bugger) that the days when flying without a radio was considered safe are long past.