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U.S. Assistant to the President for Homeland Security and Counterterrorism John Brennan, nominated by U.S. President Barack Obama to be the next Director of the Central Intelligence Agency, testifies before the Senate Intelligence Committee February 7, 2013 in Washington, DC. (Photo by Alex Wong/Getty Images).
Jeh Johnson, former Pentagon general counsel and U.S. President Barack Obama's nominee as secretary of Homeland Security, listens as Obama, not pictured, speaks during a nomination announcement in the Rose Garden of the White House in Washington, D.C., U.S., on Friday, Oct. 18, 2013.ohnson is replacing Janet Napolitano as head of the Homeland Security Department. About 40 percent of the senior leadership positions are now vacant, and Johnson said filling those posts was among his top priorities.