LAS VEGAS (AP) - The audience at the Cirque du Soleil show in Las Vegas knew something was seriously wrong when they heard the cries of the cast after one of the performers fell 50 feet. One member of the audience told the Las Vegas Sun that the woman was being pulled up by a wire when she fell into an open pit below. He says he could hear "screaming, then groaning." The woman had been an acrobatic performer for more than 20 years. She had two kids. The show "Ka" has been canceled until further notice.