There are certain traditions at airshows. For example, AirVenture is not complete for me until I see Ron Johnson’s 1941 PT-22.
Although it’s technically a Warbird, Johnson, who hails from Rockford, Ill., parks in the Vintage Area — and places toy rubber snakes on the wings of his airplane. According to Johnson, the snakes are an international way of saying DON’T TREAD ON ME. That’s important when you have a low-wing open cockpit airplane, he says, noting that some people aren’t respectful of the “Please don’t touch” placards issued by the Experimental Aircraft Association at the Oshkosh show.