The history of drones can be traced back to the early 20th century, when the first quadcopter and the first military pilotless RC aircraft were invented1. Drones were used for various military purposes, such as radio-controlled bombs and surveillance. In the 1960s, the first unmanned RC aircraft became available to consumers1. The history of non-military drone use began in earnest in 2006, when government agencies and corporations started using drones for disaster relief, border surveillance, wildfire fighting, pipeline inspection, and pesticide spraying.