Emergency Management

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A.J. Mumm, CEM®, Director

In September 2004, the Polk County Emergency Management Commission appointed A.J. Mumm to lead the countywide agency responsible for preparing for, responding to, and recovering from natural and man-made disasters.  He originally began his service with the Polk County Emergency Management Agency in January 1999 as a disaster mitigation planner and went on to join the State of Iowa’s Homeland Security and Emergency Management Division in July 2001 where he was eventually promoted to the position of Chief Planner. 

Mumm, a graduate of Drake University (BA – Biology and Geography) and Iowa State University (Master of Community and Regional Planning), is also an alumnus of the 2005 Greater Des Moines Leadership Institute’s Transformational Leadership Program.  He has taught as an Adjunct Instructor at Drake University, Des Moines Area Community College, and Texas A&M University’s Engineering Extension Service (TEEX).  

He has been published and regularly speaks on the topics of hazard analysis and risk assessment, critical asset protection, and comprehensive emergency planning.  A.J. is a recipient of the 2008 Iowa State Association of Counties’ Individual Excellence Awards for Polk County’s response to the severe weather and flooding of 2008.  Mumm is a Past-President of the Iowa Emergency Management Association and serves as Past-Chair of the Board of Directors for the Safeguard Iowa Partnership; a public-private partnership focused on disaster preparedness, response, and recovery. He currently serves on the Iowa State Association of Counties Board of Directors.

Mumm is a Certified Emergency Manager through the International Association of Emergency Managers.  He is also a part-time Firefighter/EMT with the Ankeny Fire Department.  A native of Westside, Iowa, A.J. and his wife Sabetha live in Ankeny, Iowa with their two young children and enjoy sports, boating, outdoor recreation, and travel.

Jon Davis, Deputy Director

Jon joined the Polk County Emergency Management Agency November 23, 2009. Jon has an extensive background in emergency services including emergency management, search and rescue, law enforcement, firefighting, emergency medical services and emergency communications.

As part of his extensive background in communications, Jon is a General Class Amateur Radio Operator and is a member of the Polk County Amateur Radio Emergency Service (ARES).

Jon remains active in emergency response as a member of the FEMA Urban Search and Rescue Program with responses to Hurricane Katrina, Dean, Dolly, Gustav and Ike. He is also a member of the FEMA Urban Search and Rescue Program Incident Support Team and in that capacity responded to Boulder County, Colorado for flooding. In addition to field work, he also enjoys training emergency responders nationwide. 

Jon is currently going through the Master Exercise Practitioner training course with FEMA focusing on advanced exercise design, conduct and evaluation practices in each phase of the Homeland Security Exercise and Evaluation Program (HSEEP).



Samantha Brear, Program Specialist

Samantha joined the Polk County Emergency Management Agency October 3rd, 2011. Samantha, a graduate of the University of Leeds, England (BA Hons-Geography) and the American Public University (MA Hons-Emergency Management) is originally from California.

Samantha previously worked as a contractor for Wakefield Brunswick Management Consulting that provides healthcare emergency preparedness and related emergency mananagement services throughout the US.



Franny Medeiros, Administrative Assistant

Franny joined the Polk County Emergency Management Agency May 19th, 2014. Franny, a graduate of Mercy College of Health Science obtained a certificate in Medical Assisting.

She had been previously employed at the Polk County Health Department for the past five years as a Medical Assistant. Franny has helped respond to multiple pandemics, including H1N1 where she was intrumental to the response. Franny is also a BLS intructor.

Contact Us

Polk County Emergency Management
1907 Carpenter Avenue
Des Moines, IA 50314
(515) 286-2107

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