Video shows cop doing cartwheel and backflip in full uniform

Washington, D.C., Metropolitan Police Officer Arthur Brown Jr. was flipping out with a group of kids on Saturday -- but in a good way. Brown and a group of neighborhood kids turned a playground into a mini gymnasium, showing off their gymnastics skills.First, a young boy impressed the group with his roundoff into a backflip, but Brown gave him a run for his money. A video Brown posted to Facebook shows him warming up, focusing on his target, then running into a cartwheel and twisting into a back