American says it will spend US$4m for contractors who will help manage checkpoint lines and get passengers through security more quickly. The airline said Wednesday that the workers should be on the job at major airports. The airline's chief operating officer, Robert Isom, called the step a decent start. But he said the only way to fix long airport lines is to increase staffing for the Transportation Security Administration. The TSA is facing a growing backlash over long lines at major airports around the country. The TSA has fewer screeners and has tightened security procedures, which could be slowing down the lines. American says the contractors it will perform tasks such as managing lines and collecting bins so that TSA officers can focus on screening passengers. <br/>