Pentagon

The Pentagon is a huge, five-sided office building located just outside of Washington, D.C. in the United States of America. It is the headquarters of the United States military.

"Darkness Rising, Part 2"
Special Agent William Fowler, the Autobot liaison with the United States government, reports directly to the Pentagon. When it comes to the Decepticon threat, he'd prefer to get the United States Department of Defense involved than leave it to the Autobots, but holds back to avoid civilian casualties.