However, there are problems envisaged with technology that normally takes the controller out of the decision loop but requires the controller to step back in to control exceptional situations: air traffic control is a skill that has to be kept current by regular practice. This in itself may prove to be the largest stumbling block to the introduction of highly automated air traffic control systems. User acceptance or willingness to use such technology is another important consideration air service providers need to consider prior to implementing any new technology. In a recent study with over 500 air traffic controllers from around the world, Bekier and colleagues found that once the focus of decision-making shifts from the air traffic controller, support for the technology dramatically decreases. Unsurprisingly, they also found that air traffic controllers enjoy the core tasks of their role: namely, conflict detection and resolution. In 2014, it was reported that in the United States, the Federal Aviation Administration had stopped giving preferential treatment to air-traffic controller applicants who had passed classes from the 36 FAA-approved college aviation programs across the United States, with some speculating it was due to too many white males being hired over minorities. The FAA says it “is blind on the issue of diversity". At the same time, the FAA also stopped giving preference to applicants who were military veterans with aviation experience.