IMPROVISED DEVICES Army leaders show the Army Chief of Staff Gen. George W. Casey Jr. examples of improvised explosive devices used throughout Afghanistan at Bahgram, Afghanistan, Dec. 17, 2009. Casey is visiting soldiers around the world this holiday season to thank them for their service and inquiry on the conditions. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 623610-S-VTD12-112.jpg Photo Gallery