United Technologies Corp. says it may furlough more than 5,000 workers if the U.S. government shutdown continues into next month. The company said Wednesday that its Sikorsky division, which makes Black Hawk helicopters, would be hit first. … The Hartford, Conn.-based manufacturer said it would halt some defense manufacturing because government inspectors themselves have been furloughed. That leaves it without the necessary federal approvals to make military products. …