Soundgarden frontman Chris Cornell broke up a nasty verbal altercation — scolding a businessman for making a gay slur in an argument about President Obama — in the Alaska Airlines lounge at Seattle Airport. Witnesses said Cornell jumped into action when a man in a business suit “called another man a queer when he overheard him make a pro-Obama statement. Cornell stepped up in the packed lounge and slammed the guy for making anti-gay comments.” According to a passenger in the lounge, Cornell said, “You’re a [bleep]. You deliberately called him a queer to make him feel uncomfortable in front of a lot of people.” The witness said security came and the offending suit was asked to leave. The other man and Alaska reps thanked Cornell for his help, the source added. A rep for Cornell confirmed the incident, adding he was on his way to perform at an Obama fund-raiser in San Francisco.