How does the Patriot missile system work? A radar, a three-person control van, launchers, and a $4 million interceptor that kills by hitting its target.
A carrier strike group is one aircraft carrier, a nine-squadron air wing, destroyers and a fleet oiler. Here is what each does and why the lineup varies.
Largest drones in the world, ranked by wingspan: the 262-foot Sunglider, NASA’s Helios, the Global Hawk, plus the heaviest drones and the biggest to buy.
