The NASA Distinguished Service Medal is the highest award which may be bestowed by the National Aeronautics and Space Administration of the United States. The medal may be presented to any member of the federal government, including both military astronauts and civilian employees. The NASA Distinguished Service Medal is awarded to those who display distinguished service, ability, or courage, and have personally made a contribution representing substantial progress to the NASA mission. The contribution must be so extraordinary that other forms of recognition would be inadequate.