Looking for a paperback book series that I read on base, in Honduras in 2001-2003. It is based after a nuclear war and the protagonist has a group of folks he scavenges with. . . I think he is like a Clint Eastwood type gun slinger. When he gets mad (?) his vision turns red and he enters like a berserker state. In 1 book, they visit Philadelphia(?) a nuke site that was turned to glass. Another book has them visiting a research bunker in Alaska(?), where the scientists are either holed up or coming out of a hibernetic chamber or something. . . any help is much appreciated!!