on the fence

Picture a car perched atop a metal fence—the front end on one side and the back bumper on the other side. Law enforcement agents discovered this unlikely scene when they foiled an attempt by smugglers to cross the US border from Mexico illegally. Two men had driven up ramps to the top of the 14-foot fence, and hoped to drive the car down the same way to their desired destination. When the border agents arrived on the scene, the men fled.