High Quality Content by WIKIPEDIA articles! The Oklahoma Department of Emergency Management (OEM) is a department of the government of Oklahoma responsible for coordinating the response to a natural disaster that has occurred in the State and that has overwhelmed the abilities of local authorities. This is achieved primarily through the development and maintenance of a comprehensive statewide emergency management plan. OEM is responsible for coordinating the efforts of the federal government with other state departments and agencies, county and municipal governments and school boards, and with private agencies that have a role in emergency management.