Fire Mission Soldiers prepare for a fire mission in order to register their new M198 155mm Howitzer at Forward Operating Base Boris, East Paktia, Afghanistan, August 8, 2009. The U.S. is sending 18 155mm howitzers to Ukraine as part of the latest security assistance package. SHARE IMAGE: Download Image: Full Size (2.24 MB) Photo By: Army Spc. Christopher Nicholas VIRIN: 090808-A-D0439-194.JPG Photo Gallery