CAPE CANAVERAL AIR FORCE STATION, Fla., May 10, 2000 — A Boeing [NYSE: BA] Delta II rocket today successfully replaced one of the first U.S. Air Force navigational satellites launched aboard another Delta 11 years ago. The launch took place at 9:48 p.m. EDT from Pad A of Space Launch Complex 17 and was the 31st Global Positioning System (GPS) satellite lifted into orbit aboard a Delta rocket (excluding the Block I satellites used during the research and development phase of the GPS program). Boeing has an additional 17 launches manifested aboard the Delta II rocket for the satellite-based GPS (Block IIR satellites).