PRISONER DEPICTION Navy. Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, and his wife, Deborah, greet Gerald McCullar, depicting a prisoner of war in a tiger cage at the National Mall during Rolling Thunder in Washington, D.C., May 29, 2011. Rolling Thunder is an annual event in which thousands of veterans ride motorcycles through the city to call attention to prisoners of war and those missing in action. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 243076-E-JFI98-600.jpg Photo Gallery