FILE - A launch truck fires the High Mobility Artillery Rocket System (HIMARS) produced by Lockheed Martin during combat training in the high desert of the Yakima Training Center, Washington on May 23, 2011. Ukraine has received about a dozen American-built HIMARS multiple rocket launchers and has used them to strike Russian ammunition depots, which are essential for maintaining Moscow's edge in firepower. (Tony Overman/The Olympian via AP, File)