"But the Emperor stood alone now on his dais pointing toward the doors. A forty-meter section of the hutment had been blasted away there and the selamlik's doors opened now onto drifting sand. A dust cloud hung low over the outside world blowing from pastel distances. Static lightning crackled from the cloud and the spark flashes of shields being shorted out by the storm's charge could be seen through the haze. The plain surged with figures in combat-Saudaukar and leaping gyrating robed men who seemed to come down out of the storm. All of this was as a frame for the target of the Emperor's pointing hand. Out of the sand haze came an orderly mass of flashing shapes-great rising curves with crystal spokes that resolved into the gaping mouths of sandworms, a massed wall of them, each with troops of Fremen riding to the attack. They came in a hissing wedge, robes whipping in the wind as they cut through the melee on the plain. Onward toward the Emperor's hutment they came while the House Sardaukar stood awed for the first time in their history by an onslaught their minds found difficult to accept." - Dune
