Location from Invincible by Robert Kirkman
The Global Defense Agency's headquarters — hidden beneath America's most famous military building, where Cecil Stedman pulls the strings that keep Earth from falling.
The Pentagon's underground GDA levels hum with the tension of permanent crisis management. Banks of monitors display global threat assessments. Analysts track superpowered individuals across the planet. Cecil's office is sparse — a desk, a chair, a direct line to every weapons system on Earth. The air smells like recycled oxygen and institutional coffee. This is where the decisions get made that heroes never see — the compromises, the deployments, the quiet authorizations that keep the world turning at the cost of Cecil's soul.
On the surface, the Pentagon looks exactly like what the public thinks it is — the headquarters of the United States Department of Defense. Beneath it, the GDA levels extend downward into a vast underground complex of command centers, weapons labs, detention facilities, and teleportation hubs. The subterranean levels are sleek, militaristic, and lit by harsh fluorescent lighting — no windows, no natural light, no pretense of comfort.
Also known as: GDA Headquarters, GDA HQ, The Pentagon