Daimler AG announced Tuesday that it was recalling 840,000 vehicles in the United States - including more than 700,000 Mercedes-Benz models - because they're outfitted with air bags made by Takata Corp., which can explode with deadly force. In addition to about 705,000 Mercedes-Benzes, the German automaker said it's also recalling about 136,000 Daimler vans. It said the recall, which it called "precautionary," will cost the company almost $400 million.