Sgt. 1st Class Fredrick Edwards yanks a lanyard to test fire a D-30 howitzer U.S. Army Sgt. 1st Class Fredrick Edwards yanks a lanyard to test fire a D-30 howitzer at the Kabul Military Training Center in Afghanistan on March 19, 2013. The test fire is the final step before reissue of this refurbished artillery weapon. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 007165-F-AAJ76-248.jpg Photo Gallery