Buzz Bomb, a nickname for the German V-1 pilotless airplane.
Nations are facing a more guerilla-style warfare – even at sea, and the equipment must evolve to meet new demands. Enter the Sea Fighter. Learn about this experimental, high-speed, "invisible" ship.
This week, U.S. officials said they dispatched scientists in December to search for dirty bombs in five U.S. cities, after learning of possible New Year's Eve terrorist attacks. Learn all about these crude weapons.