The nerve! The Killers have bowed out of three dates on their current tour, owing to a mysterious illness contracted by singer Brandon Flowers. After a shaky performance of "When You Were Young" at Denver's outdoor Red Rocks Amphitheatre, Flowers walked offstage and didn't return. Drummer Ronnie Vannucci, Jr. later announced to the upset crowd that "His voice is very screwed up." The band later cancelled their scheduled performances at Seattle's WaMu Theater and the KROQ Weenie Roast just outside of Los Angeles. According to The Killers' website, Flowers is suffering from bronchitis. Apparently it's going around in Sam's Town. Below, take a look at Vannucci's somewhat odd apology: