胖子

　　胖子是在波士顿的Fort Strong军械库内构思，开发和测试的。军营被夷为平地，并在堡垒周围建造了几个房屋，以提供一个测试区域，以更好地确定武器在城市环境中会造成多大的破坏。

　　2075年6月，堡垒的指挥官布罗克将军负责开发M-42发射装置并测试新建的T-51b动力装甲，并将其团队的一半专用于每个项目。负责发射器的团队首先试图降低弹头的重量，后来试图增加射击机制的功率，但两种设计都未能产生令人满意的结果。在这两种情况下，爆炸都太靠近发射发射器的士兵，要么在爆炸中杀死它们，要么将它们浸入致命的辐射水平。

　　经过将近两年的时间，以及由于失火的武器而失去了一个测试小组，该项目背后的工程师为每个弹头建立了一个融合子装药，大大增加了发射器的射程，并且设计证明是成功的。2077年9月，发射器从堡垒运往密西西比州的一个供应场，并从那里运往中国前线。

　　The Fat Man was conceived, developed and tested inside the Fort Strong armory in Boston. The barracks were leveled and several houses were constructed around the fort to provide a testing area, to better ascertain how much damage the weapon would cause in an urban environment.

　　In June 2075, General Brock, the commanding officer at the fort, was placed in charge of developing the M-42 launcher and testing the newly-minted T-51b power armor, and dedicated half of his team to each project. The team in charge of the launcher first attempted to lower the weight of the warhead, and later tried to increase the power behind the firing mechanism, but both designs failed to produce satisfactory results. In both scenarios, the explosions were far too close to the soldiers firing the launcher, either killing them in the blast or soaking them in lethal levels of radiation.

　　After almost two years, and the loss of a testing squad due to a misfiring weapon, the engineers behind the project built a fusion sub-charge into each warhead, greatly increasing the launcher's range, and the design proved successful. In September 2077, the launchers were shipped from the fort to a supply yard in Mississippi, and from there to the Chinese front.