Dan Johnston received a B.S. in Aerospace Engineering from the University of Texas in 1984 and an MSE from the University of Texas in 1989. Since joining JPL in 1989, he has participated in the development and flight operations phases of the Mars Observer and Mars Global Surveyor missions. He is a recipient of NASA’s Exceptional Achievement Medal for the aerobraking operations planning of Mars Global Surveyor. Prior to joining JPL, he was employed with McDonnell Douglas Astronautics in Houston, TX in support of STS (Shuttle) rendezvous flight planning. Currently, he is the Mission Design Manager of the Mars Reconnaissance Orbiter Project.