Admiral Michael Mullen, USN (b. 1946) is the 17th and current Chairman of the Joint Chiefs of Staff, serving under both Presidents George W. Bush and Barack Obama. In April 2010, Admiral Mullen and Deputy Secretary of Defense William J. Lynn attended a special screening of When Families Grieve along with the production's stars (Elmo, Jesse, and Rosita) and Sesame Workshop President Gary Knell.