The rocket that was used from the U.S. Navy cruiser was an adaptaion of the anti-balistic missile technology already in place. My source mentioned that all the U.S. Navy engineers had to do was to slightly modify the guidance software to respond to a different 'vehicle' profile dimension and speed. The video of the impact did verify that the hydrazine fuel tank was, in fact, destroyed ( along with all the super-sectret spy stuff that Bill Clinton
didn't sell to the Chinese in 1996... LOL. )
If the tank had not been destroyed, there is a chance that it would have survived atmospheric re-entry in one piece and hydrazine is some really nasty stuff to land in a populated area...
Good shooting United States Navy!!
Hydrazine - Wikipedia, the free encyclopedia