LINK TO ARTICLE The U.S. Army has successfully tested the new 1B version of the Excalibur GPS guided artillery shell. The 1B model can turn in flight and hit targets behind a ridge (the “reverse slope”) or under a bridge. In effect the Excalibur is programmed to carry out a high speed U-turn so that it comes down behind a ridge next to a bridge. Artillerymen have mentioned that they are often asked to hit Islamic terrorists on the reverse slope or under a bridge because that provides them some protection from guided artillery shells, rockets and mortar shells.