Observers call exercise an important step, say it was more extensive than past incident-response drills.
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Michael Brown also says he was frustrated by Homeland Security Department bureaucracy and focus on terrorist threats.
Working group is nearly done simplifying performance management system.
Placing a single person in charge of active-duty and Guard forces is not a good idea in such situations, Defense official says.
Transportation Security Administration director says comprehensive audit would be necessary to review one system, further delaying it.
Plan submitted to lawmakers would increase fleet, which is the smallest it has been since just before World War I, by 30 ships in five years.
The less than $3 billion left is not enough to complete 87 water and 125 electric projects, inspector general says.
Agency created to bring Defense modernization programs under one roof unveils organizational structure and first budget request.
Department requests funding boost for Citizenship and Immigration Services in anticipation of new requirement.
Annual practice of submitting supplemental requests is "unacceptable and it's got to stop," senator tells Defense Secretary Donald Rumsfeld.