Adm. Mike Mullen reviews British troops during a ceremony welcoming him to London. Chairman of the Joint Chiefs of Staff Adm. Mike Mullen reviews British troops during a ceremony welcoming him to London, England, on June 10, 2011. Mullen is on a seven-day trip visiting Egypt, Germany and England to meet with counterparts and leaders. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 919545-F-RTY92-394.jpg Photo Gallery