Mysterious tear gas canister sickens 43 in city By KIRK SWAUGER and PETE BOSAK, the tribune-democrat November 20, 2002 In violence called domestic terrorism by authorities, a canister of highly potent riot gas was detonated in a busy Johnstown neighborhood yesterday, sending 43 passers-by to hospitals. None of the patients was seriously injured by the gas, which is only available to the military or large police departments. An unnamed victim was admitted to nearby Memorial Medical Center for observation. All others were treated and later released from local hospitals. Symptoms ranged from tightness in the chest and tearing and burning...