IEM Leadership

Stephanie Tennyson

Chief Communications Director

Stephanie Tennyson, Chief Communications DirectorStephanie Tennyson joined IEM as the Chief Communications Director in September 2019. In this capacity, she provides strategic direction and oversight for the company’s external and internal communications. As IEM’s Chief Communications Director, Ms. Tennyson is driving the development and implementation of the company’s external and internal communications activities, to include media relations and digital engagement programs, and serving as the chief spokesperson. She works directly with the executive team to advance IEM’s mission and maximize the company’s impact.

Prior to joining IEM, Ms. Tennyson served as the Government Affairs Lead at One Concern, a Silicon Valley-based artificial intelligence (AI) and machine learning start-up focused on resilient communities beginning in December 2017. In this position, she directed and managed government engagement and created thought leader roles at the national, state and regional level to shape outcomes that supported One Concern’s mission and clients. She developed and maintained relationships with senior officials and staff within federal agencies, on Capitol Hill, in state, local, tribal and territorial (SLTT) governments, and their associations.

Prior to joining One Concern, Ms. Tennyson served as the career Senior Executive Deputy Director of the Federal Emergency Management Agency’s (FEMA) Office of External Affairs (OEA) from January 2013 until November 2017. OEA is FEMA’s centralized coordination and implementation office for public affairs, strategic and internal communications, congressional affairs, intergovernmental affairs, and private sector engagement, as well as the national, branded public safety marketing campaign. As OEA Deputy Directory, she served as a key advisor to the FEMA Administrator and senior FEMA leadership on the development of communication and outreach strategies and programs. Ms. Tennyson managed the administrative, day-to-day operations of the Office, overseeing budget and resource allocation, and program execution as well as training and development program for External Affairs staff agency-wide, including a headquarters staff of 90 and a yearly budget of over $14 million.

From March 2008 until January 2013, Ms. Tennyson served as the Deputy Assistant Secretary (DAS) for the Office of Intergovernmental Affairs (IGA) at the U.S. Department of Homeland Security (DHS) headquarters. As the DAS, she managed DHS’s IGA engagement with SLTT elected and appointed officials and their national associations on a wide range of issues including, intelligence and information sharing, DHS grants, tribal consultation and engagement, emergency management, science and technology policy, and immigration and border policies. Ms. Tennyson developed recommendations for senior leadership to improve program and policy decisions and address stakeholder questions and concerns. She also served as the primary point of contact for the Council of Governors, coordinated Council activities within DHS and with the Department of Defense, the National Security Staff, and White House. In this role, she directed and coordinated DHS interaction with SLTT and with their national associations.

Prior to joining the Department, Ms. Tennyson began her career in public policy and communications at a non-profit think tank focused on science and technology and national security policy. She served as the Director of Communications & Government Affairs at the Potomac Institute for Policy Studies. In this role, she developed and implemented a comprehensive communications and government affairs strategy for the Institute. Ms. Tennyson managed outreach and communication with the media, government agencies, academia, the public, and other stakeholder communities. During her more than ten years at Potomac Institute, she served as an IPA to the DHS Science and Technology Directorate as the Manager of External Affairs. In this capacity, she led the development and execution of Directorate’s first comprehensive External Affairs program to promote and sustain partnerships and interactions with stakeholder communities (e.g., first responders, academia, private sector, trade associations, and SLTT governments) to include an outreach strategy, marketing materials, and collaboration within DHS. Prior positions at Potomac Institute included the Director of Legislative and Judicial Affairs, Research Associate, and Manager of Research Support.

Ms. Tennyson graduated from the Executive Leaders Program at the Naval Postgraduate School’s Center for Homeland Defense and Security, holds a bachelor’s degree from Washington College, and completed graduate work at Virginia Tech. She is based in IEM’s Arlington, VA office.

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IEM became one of the first companies to focus solely on emergency management and to use quantitative data and science to inform decisions in emergency management. Over the past 35 years, IEM has grown from a company of one to an employer of over 550 employees, and has provided clients and communities with innovative solutions that produce results and save lives.

The Chemical Stockpile Emergency Preparedness Program (CSEPP) is jointly managed by FEMA and the U.S. Army. The program ensures maximum protection for the communities surrounding U.S. chemical weapons stockpile sites. Since 1993, IEM has provided program integration services to FEMA and through FEMA to the states and counties that are part of CSEPP.

In 1999, FEMA selected IEM to be the CSEPP onsite Program Management and Integration Contractor. IEM worked with program managers to develop a flexible protection framework that broke down the “maximum protection” mandate into measurable benchmarks. These benchmarks have been adopted by emergency managers in 10 states, 40 countries, and one Tribal Nation.
IEM was awarded a five-year BPA with FEMA to continue working to further CSEPP initiatives between 2000 and 2004. During this time IEM was contracted to develop a secure website to facilitate communication and information-sharing among CSEPP planners nationwide who work in different jurisdictions. The website IEM created now has over 1,000 active users who use it as their primary source of CSEPP information. IEM also developed a demonstration version of an interactive computer-based “game” designed to illustrate the effects of different protective action decisions in a CSEPP emergency to citizens in the Madison County, KY, CSEPP community.

FEMA awarded IEM a second five-year BPA from 2005-2011. IEM was asked to provide CSEPP technical and analytical studies, risk assessments, support for development of programmatic guidance and preparation of reports to Congress. IEM was required to evaluate the Oregon CSEPP community’s readiness in the event of a depot incident. IEM also assisted in the planning and execution of regular readiness exercises and supported pre-exercise meetings. IEM’s work for CSEPP has been recognized on multiple levels. In 2004, FEMA and IEM received a Profiles in Innovation Award for Emergency Preparedness and Response Excellence from GOVSEC (Government Security Expo and Conference). IEM continues to work with FEMA to increase preparedness and achieve measurable results.


QEM uses the information gathered from conducting different scenarios to calculate the risk and impact of implementing different risk-reducing strategies. It pinpoints the actions that are the most effective at reducing risk across a wide spectrum of potential events. QEM allows clients to know the best way to allocate funds and bridge gaps in preparedness without spending thousands of dollars to implement ideas that cannot work.

QEM’s methodology has been applied to hundreds of IEM projects, such as readiness assessments, chemical plant mitigation studies, protective action analyses, and hurricane evacuation planning. The U.S. Army and FEMA have repeatedly used QEM technology to assess strategies to protect citizens in case of an accidental release of chemical agents. DOD’s Defense Threat Reduction Agency (DTRA) also utilized QEM to quantify the effectiveness of various chemical defense systems. The software continues to provide valuable solutions to clients.