Mortar training during Fearless Guardian

A mortarman with the U.S. Army's 2nd Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade makes adjustments to his 81-millimeter mortar system during Fearless Guardian April 25, 2015 in Yavoriv, Ukraine. The 173rd Airborne Brigade will train several battalions of Ukraine's newly-established National Guard over a six-month period at the request of the Ukrainian government. (U.S. Army photo by Sgt. Alexander Skripnichuk, 13th Public Affairs Detachment)