Marine Parachute Troops Test Sectional Bicycle - Private Douglas Boyd, of Porter, Okla., a marine Parachutist, demonstrates how he would ride away with a Tommy Gun into "Enemy" territory after is sectional Bicycle had been put together following a leap with it from a plane. The Marines are trying out the use of sectional Bicycle for parachute troops as a purely experimental idea. In real practice, he would not have the parachute on his back because he already would have used it to land. September 18, 1941. (Photo by ACME).