A preauthorization is not a guarantee of benefits or payment. Predetermination. is a voluntary, written request for review of. treatment or services and includes services that may be considered. not medically necessary; investigational, experimental or unproven; or.
The Mercury Project suffered some early setbacks, however, and on April 12, 1961, Soviet cosmonaut Yuri Gagarin orbited Earth in the worldâs first manned space flight. Less than one month later, on May 5, astronaut Alan Shepard was successfully launched into space on a suborbital flight. On February 20, 1962, in a major step for the U.S. space program, John Glenn became the first American to orbit Earth.
- Dr. Ronald Ervin McNair - Physicist/Astronaut. Also flew in the first Challenger mission, becoming the second African-American in space. - Lt. Col Ellison Shoji Onizuka(promoted to Col. posthumously) - Research Engineer/Astronaut. Flew the first Discovery mission for the Department of Defense in 1985.