GUEST BOOK U.S. Defense Secretary Leon E. Panetta stands with Polish Defense Minister Tomasz Siemoniak as he signs a guest book befpre a meeting at the Pentagon, July 25, 2012. The two defense leaders met to discuss issues of mutual concern. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 201372-G-CQG24-238.jpg Photo Gallery