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"Emergency response personnel from all across our country were called upon to assist, including 50,000 National Guard forces from every state and every territory," said Heineman. "As the floodwaters slowly receded and the country assessed what had occurred, some in the federal government decided that federalizing the response effort was the solution." https://www.army.mil/article/74990/guards_role_in_disaster_response_defined_more_clearly