UPDATED - Machine Gun Report In Uptown, Chicago

6:33 P.M., AUGUST 5, 2010 - FLASH: CPD DISPATCH REPORTS A SHOOTER NOW WITH A MACHINE GUN "FIRING INTO THE AIR" IN THE 4500 BLOCK OF N. BEACON IN CHICAGO'S UPTOWN NEIGHBORHOOD... CPD IS RESPONDING. UPDATE, 6:37 PM - CPD gave a "disregard" because they did not see anybody with a gun as they drove through the block. HOWEVER, somebody called that in. Was this bona fide, and if so, where did Mr. Machine Gun run off to? (Far too often the police respond to calls of "shots fired" by driving past the reported scene, without bothering to get out do a proper inspection or even talk to anybody.)