Ma Shen was raised in unusual circumstances; his great-grandfather witnessed the US nuclear strike on Nagasaki and in turn was instilled with a terror of atomic weapons. Returning to his native China, he retreated to a bunker deep in the wilderness where he and his descendants would raise their families. By the time of Shen's birth, the bunker expanded into a large underground complex. Raised and schooled there, he inherited the absolute terror of nuclear warfare that had so blighted his family. As he reached adulthood, he realized he could no longer be ruled by his terror and set out to embrace, applying to serve in the first APA Atomic Warfare Division. The military choose to overlook Shen's obvious psychological issues and accepted him into the corps. Fifteen years later, Shen mastered his fear and now leads the Atomic Warfare group. His great-grandfather, he believes, would be proud.