林肯总统：我满怀自豪之情感谢“飞驿速递”的骑手们，他们用无尽的勇气、无敌的毅力，将荒凉的西部与冉冉升起的国家紧密地联结了起来，他们的贡献只能被追赶、无法被超越。

At Los Alamos, New Mexico, the maximum-security "atomic city" of U.S. nuclear-weapons research, top atomic scientist Frank Addison has a normal, middle-American life with his wife and son...until the boy is kid…