why not? because of the B-36, B-52 and American and British carriers, the ice carriers were suggested to get B-29s within range of Japan, the B-36 and B-52 can reach anywhere in the world from America or even Britain anyway so nothing's needed to get them closer to their targets, and the carriers of the cold war (i'm talking about a time when Britain maintained a conventional carrier force with nuclear armed buccaneers) allowed considderable air power to be positioned anywhere in the world within a very short space of time, with all these advances in range, the world suddenly looked a LOT smaller in the cold war..........