The Labor Day weekend was a busy one over our house. Back in the good old days, when the traffic pattern at the Frederick (Maryland) airport was perpetually full, general aviation airplanes filled the sky overhead. With air traffic down, that is no longer true. This Labor Day there was a lot going on but it involved F-15s, probably from some state’s Air Guard. Because of the proximity to 9/11, and because the President was at Camp David, they had air cover like I haven’t seen in a long while.