Pfc. Davonta Colflesh of the 403rd Army Field Support Brigade in Daegu, Korea, performs a weapons assembly task during a mystery event that was part of the Army Materiel Command Best Warrior Competition at Rock Island Arsenal, Ill., July 28. Colfles...

Pfc. Davonta Colflesh of the 403rd Army Field Support Brigade in Daegu, Korea, gives the signal for gas after donning a protective mask during a mock chemical attack during the Army Materiel Command's Best Warrior at Rock Island Arsenal, Ill., July 2...

Pfc. Davonta Colflesh, right, of the 403rd Army Field Support Brigade in Daegu, Korea, provides first aid during a situational training exercise that was part of the Army Sustainment Command Best Warrior Competition at Rock Island Arsenal, Ill., June...