The Washington chapter of the Council on American-Islamic Relations (CAIR-WA) today welcomed the conviction of an off-duty security guard for repeatedly shooting an Afghan-American teen in the back as he tried to return an airsoft gun at a store. Aaron Brown Myers, 51, was found guilty on charges of second-degree murder and second-degree assault in the death of 17-year-old Hazrat Ali Rohani, who was killed outside a Big 5 store in Renton, a city…