Sgt. 1st Class Ruben Stith, an instructor with the 7th Army’s Joint Multinational Training Center in Grafenwoehr, Germany, watches as a soldier from the U.S. Army NATO Brigade checks the head space and timing on an M2 machine gun. Sgt. 1st Class Stith was conducting a weapons familiarization class for the soldiers as part of their train up for the 2012 NATO Brigade Best Warrior Competition.