US Marine Corps General James Mattis waits to testify before the Senate Armed Service Committee for his reappointment to the grade of general and to be commander of the United States Central Command or CENTCOM on July 27, 2010 on Capitol Hill in Washington, DC. Mattis was nominated to replace General David Petraeus who formally took over command of the Afghan war after Obama sacked General Stanley McChrystal over an interview to Rolling Stone magazine.  AFP PHOTO / Tim SLOAN (Photo credit should read TIM SLOAN/AFP/Getty Images)