I'm sure we've all seen by now the "photo op" of President Obama shooting skeet. If he's shooting skeet then I'm Daffy Duck. Skeet [clay disks of bright colors] are thrown by a machine from two towers erected to the right and left of the shooter. (There are other set ups like ones used for "sporting clays" but that isn't represented in the White House photo release.) Usually, the skeet is thrown about ten or more feet above the ground. The shooters are arranged in a semi-circle at various stations around the semi-circle. The "group" of shooters lines up at...