Navtech Seminars is planning three GPS courses Nov. 18-22 in Alexandria, Va., and six GPS courses in Orlando, Fla., Dec. 9-13. Courses range from the "Fundamentals of GPS" to "Applied Kalman Filtering with Emphasis on GPS Applications." In other Navtech news, the company recently named retired Army Col. Sammie Young, formerly GPS project manager at Fort Monmouth, N.J., as vice president of business development. (Navtech Seminars, 800/628-0885, 703/931-0503, fax, http://www.navtechgps.com.)