HAGERSTOWN - A rabid black bear trying to rip out a window air conditioner lost its tug-of-war with a terrified housewife when her husband blasted the beast with a shotgun, the woman and a state wildlife official said today. The bear rushed the house after Charlotte Stanton yelled out her screen door to try to scare it away from a goat pen. Stanton, 39, of rural Grantsville in Garrett County, said she was losing her tussle with the 134-pound sow when Michael Stanton pulled the trigger. "I finally yelled at my husband, because I couldn't hold on to that air...