Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

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Dirksen Senate Office Building is a seven-story building faced in marble.
The Dirksen Senate Office Building was the second of three office buildings...

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View of the U.S. Capitol Building from above at dusk
In order to ensure the safety of visitors and staff and to preserve the...

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Painted portrait of Dr. William Thornton
 The Architect of the Capitol (AOC) is the builder and steward of America’s...

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Nitrate vault at the Library of Congress Packard Campus
The Architect of the Capitol (AOC) is responsible for managing all of the...

Office of Security Programs

West Front of the U.S. Capitol with a clear blue sky in the background

The AOC Office of Security Programs (OSP), led by Ken Eads, is responsible for the maintenance, care and operation of the buildings, grounds and security enhancements of the U.S. Capitol Police (USCP) and other related facilities. OSP is also responsible for centralized security operations. The AOC oversees and supports the USCP and other functions for policing, protecting and securing the congressional community and its visitors.

This office is responsible for the delivery of unique, value-added, integrated support services that include all cross-jurisdiction security enhancements, the management of all AOC internal security programs and perimeter security kiosks and the coordination of interagency emergency preparedness.