US Secretary of Defense Chuck Hagel walks past an honor cordon as he exits the Pentagon to greet New Zealand Minister of Defense Gerry Brownlee prior to meetings in Washington, DC, November 24, 2014. Hagel resigned earlier in the day but will remain at his post until a successor is named and confirmed by the US Senate. AFP PHOTO / Saul LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)