Interesting footage from a recent test of an electromagnetic rail system under development for the Navy. Very science fiction.
As I've mentioned before, the deployment of a workable EM rail gun system may well usher in a new generation of active defensive systems for naval surface combatants. The extended range and flight speed have the potential to push out effective defensive envelopes far enough to counter the proliferation of cruise- and semi-ballistic missiles currently taking place in the Pacific and Middle East. Such expanded depth could prevent the obsolescence of surface warfare ships like carriers, much as how new composite armors during the 1980s kept main battle tanks as viable combat platforms on battlefields, despite the fielding of large numbers of wire-guided armor-piercing missiles during the 1970s.