 Each year the National Science Foundation sends out a call to the scientific community for the nomination of new candidates for the National Medal of Science.Individuals are nominated by their peers with each nomination requiring three letters of support from individuals in science and technology.Nominations are then sent to the Committee of the National Medal of Science which is a board composed of fourteen presidential appointees comprising twelve scientists, and two "ex officio" members—the director of the Office of Science and Technology Policy (OSTP) and the president of the National Academy of Sciences (NAS).