A branch drain accepting waste products delivered to it vertically, by gravity, from one or more similar but usually smaller fixtures, and conducting them horizontally to the primary disposal drain.
But this preliminary document is the clearest indication of the Pentagon's thinking about the future of nuclear missiles. In short, the Pentagon plans to replace the Minuteman III ICBM with a new launch rocket, one that would launch from the same silos in Montana and South Dakota where the missiles sit now. However, a new missile does not mean a new warhead.
That would allow the missile to reach Alaska or to strike U.S. bases on the Pacific island of Guam. According to South Korea's daily newspaper Chosun Ilbo, citing an unnamed government official, North Korea had completed production of at least three ICBM-standard missiles as of last year.