190423-Z-EU280-2011
U.S. Air Force 1st Lt. Daniel Wallace, a mobility combat systems officer with the 183rd Wing, Illinois Air National Guard, poses with a C-130H Hercules aircraft in Peoria, Ill., April 23, 2019. Air Force combat systems officers serve as mission commanders for aircraft electronic warfare, weapons systems and navigation. (U.S. Air National Guard photo by Tech. Sgt. Lealan Buehrer)