From a statement by Sec. Chertoff released by DHS this afternoon:
General Matthew Broderick has announced his resignation as Director of the Operations Directorate for the Department of Homeland Security, effective March 31. After more than 30 years of distinguished service in the Marine Corps, Matt answered the call to serve our nation yet again by building the Homeland Security Operations Center. Over the past three years, Matt made tremendous contributions to our homeland security, having planned and coordinated countless national security events and intra-agency activities. Most recently, he led the start-up of the Operations Directorate, established after the Second Stage Review. Matt worked tirelessly to ensure the integration of the department, always demonstrating coolness in crisis and energy and integrity in the execution of his duties, under the most difficult circumstances.
The office that Broderick heads up is described here, and this two-year old Washington Post story provided a good early assessment of the Homeland Security Operations Center. Broderick’s Senate testimony in February and this recent Newhouse News story describe his role in the early hours of the response to Hurricane Katrina.