In compliance with the most recent nuclear treaties with the Russians the U.S. is in the process of reducing its Minuteman III ICBMs from 450 to 400. The current number in silos is 406 and the remaining six are to be pulled and put into storage shortly. Also 41 B-52s (almost all remaining) are being converted to nonnuclear configuration. As a hedge against possible cheating by the Russians, the 50 missiles are being placed in storage and their launch silos preserved rather than being demolished. The Minuteman III is a 50 year old design though their warheads are of a far more recent type that used to be deployed on the M-X Peacekeepers before their decommissioning. Each Minuteman III is armed with a single 300 kiloton nuclear warhead. Personally, I think the U.S. could make do with only 200 ICBMs as long as they have a mobile basing system (revival of one of the M-X mobile proposals). Of course we need newer, more advanced missiles with more flexibility. Able to be retargeted while in flight. Perhaps capable of carrying up to 10 warheads though deployment would be initially with a single warhead.