Tech of the past: Curtiss JN 4-D
Flight technology advanced fast -- so fast, in fact, that by World War I planes were a common combat device. After the war, many American pilots returned home and found jobs stunt flying at fairs, circuses, and carnivals. This 1917 Curtiss JN 4-D "Canuck" plane was used for such "Barnstormer" shows.
Photo by Wally Bahny for TechRepublic