As Under Secretary, Beers directed the Department's efforts to reduce risks to physical, cyber and communications infrastructures. NPPD collaborates with all levels of government, the private sector, non-government organizations, and international bodies to prevent, respond to, and mitigate threats to U.S. national security from acts of terrorism, natural disasters, and other catastrophic events. He is a member of the
National Infrastructure Advisory Council. Beers served as Counselor to Secretary
Janet Napolitano beginning on January 21, 2009, and continued in that capacity while directing the activities of NPPD. Before his appointment, he was the co-leader of the Department of Homeland Security Transition Team for the incoming
Obama administration. Prior to the 2008 election, Beers was president of the
National Security Network, a Washington, D.C.–based foreign policy
think tank he founded in 2006 to foster discussion of progressive national security ideas around the country, and an adjunct lecturer at
Harvard Kennedy School at
Harvard University. Between April and September in 2013, he was the acting
United States Deputy Secretary of Homeland Security. Following Napolitano's resignation on September 6, 2013, Beers became acting
United States Secretary of Homeland Security. His tenure ended when
Jeh Johnson was confirmed as Napolitano's replacement by the
United States Senate on December 23, 2013. ==Personal life==