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Homeland Security Audio Archive

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Mark Landahl

Sergeant, School Resource Officer Unit, Frederick County Sheriff's Office

"On 9/11, 2001, I listened to the radio with my academy classmates as the attacks unfolded. On that day, the questioning of my career decision stopped as I knew I was where I belonged and dedicated myself to what became homeland security."

CHDS Comment Policy
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HSAJ
Homeland Security Affairs Journal
Read Ten Years After: The 9/11 Essays, a special issue of Homeland Security Affairs, with reflective essays on the evolution of homeland security and where it is heading. Original essays are authored by Secretaries Napolitano, Chertoff and Ridge, Assistant Secretary Stockton and members of the CHDS faculty.

HSDL
Homeland Security Digital Library (HSDL)
Read the On the Homefront blog series discussing different facets of our shared American experience that have changed significantly or been affected deeply by the 9/11 terrorist attacks.

Browse key documents and resources in the 9/11 Ten Years Later featured topic.

CHDS Annual Report
CHDS Education Report
Highlights of the national impact of CHDS graduate and executive education and the Center's resources. The report features success stories of alumni who work on the front lines of homeland security.
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