Taking a Nap Next to an Unexploded Bomb
At first blush, it might not appear to be quite such a terrible thing to have to live in a confined space. Before they find out that they have to share the space with potentially catastrophic weapon systems, there is a chance that some people will enjoy the closeness that comes with such confined quarters.
In order to fulfil this requirement, you will need to cultivate a level of tolerance for spending extended periods of time in close proximity to potentially lethal weapons such as torpedoes, ballistic missiles, and nuclear bombs. This will enable you to meet the requirements of the position. This will require you to train your body to adjust to the environment.