Ribbons of tickets trade hands for a drone raffle. It's DC Drone Day on a field in the part of western Maryland where suburbs give way to parks, rolling hills and farmland. The field is a weekend hangout spot for a group called DC/RC, one of several local clubs for people who are into flying things; specifically, pilots of radio-controlled things; even more specifically, aeromodelers. Aircraft modeling is a decades-old hobby that counts tens of thousands of followers in the country and has seen its share of changes in technology. Drones arrive as the latest revolution, and aeromodelers are sizing it up with a sense of both intrigue and apprehension -- like staring down the new guy at school who's got the cool kicks and somehow, keys to all the secret parts of the building, but sometimes does incredibly stupid things that ire the gym teacher into making everyone run laps.