Show odd traffic directing high up in the signal control tower it the detroit municipal airport a man stands as planes come in directing traffic with a barrel shaped object 18 inches lon long and 8 inches in diameter it Is fitch fitted with pistol grips and triggers As the planes hover in close the man can bs be seen pointing the weapon at them it Is an aerial traffic light which la Is visible only to the tile the plane at which x it Is pointed when the red light shines the pilot must circle some more but when he spots the green the field Is clear for him to bring ills his plane down |