In addition, the United States Government has recently begun to employ lean startup ideas. The Federal Chief Information Officer of the United States , Steven VanRoekel noted that he is taking a "lean-startup approach to government."  Ries has also worked with the former and current Chief Technology Officers of the United States — Aneesh Chopra and Todd Park respectively—to implement aspects of the lean startup model into the United States Government .   In particular, Park noted that in order to understand customer demand, the Department of Health and Human Services , recognized "the need to rapidly prototype solutions, engage customers in those solutions as soon as possible, and then quickly and repeatedly iterate those solutions based on working with customers."   In May 2012, Ries and The White House announced the Presidential Innovation Fellows program, which brings together top citizen innovators and government officials to work on high-level projects and deliver measurable results in six months.