The idea of replacing every one of the military's manned vehicles with an unmanned system was once an unattainable fantasy. But with the development of remote technology, it has moved firmly into the realm of reality, and the popularity of drone use in the war against militant Islam has prompted a debate over what kinds of vehicles should compose its future fleets. And while the national conversation has focused almost exclusively on aircraft, unmanned technology has applications in ground and sea vehicles as well. Remote operation has the potential to further transform the way the United States makes war. Earlier this year, in fact, U.S. Secretary of the Navy Ray Fabus said the F-35 Joint Strike Fighter, which is currently being developed, could well be the last manned fighter aircraft his branch of the military will ever buy or fly.