This diagram of the HYDRA base from 1969's Nick Fury, Agent of SHIELD 15 demonstrates that evil organizations are unafraid to store copious amounts of fissile material underneath America's sidewalks.
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You can read more about HYDRA's lack at Bully's Comics. In another section, Bully analyzes another hallmark of HYRDA office politics: the Crime Wheel, which truly deserves to make it into Captain America. Dial "Rhino" for heavy weapons!