Adm. Mike Mullen observes as Gen. James N. Mattis and Gen. David H. Petraeus pin Gen. John R. Allen at his promotion ceremony.
Chairman of the Joint Chiefs of Staff Adm. Mike Mullen observes as Commander of U.S. Central Command Gen. James N. Mattis and Commander of International Security Assistance Force Gen. David H. Petraeus pin Gen. John R. Allen at his promotion ceremony at ISAF headquarters in Kabul, Afghanistan, on July 18, 2011.