Your navigation apps run off a hodgepodge of satellites, the oldest of which dates to 1993. That will change when GPS Block III, developed by Lockheed Martin, takes over the skies. Compared to its predecessor, this modern fleet of at least 12 orbiters will be three times more accurate for civilian users, and, for the military, provide more powerful signals and eight times better anti-jamming capabilities. The crafts will also last 15 years—25 percent longer than the ones circling Earth right now. The first one launched from Cape Canaveral, Florida, in December 2018, and the second this past August. The third goes up early next year.