Dr. Gary McGraw is a PNT and systems engineering consultant. He retired as a Technical Fellow at Collins Aerospace. Dr. McGraw led the development of several high accuracy and high integrity navigation systems for both civil aviation and military applications. His current research areas are focused on the use of communication data links for high accuracy positioning and timing and GNSS-based aircraft landing system developments. He received the B.S. degree in Electrical Engineering and Mathematics from Iowa State University, and the M.S. and Ph.D. degrees in Electrical Engineering from the University of California, Los Angeles. Dr. McGraw is a Fellow of the Institute of Navigation (ION) and is a Senior Member of the IEEE. He is an Associate Editor of the ION NAVIGATION journal, was the recipient of the 2011 Johannes Kepler Award from the ION, and currently serves as the ION President.