Senior Airman Chad Johnson, a passenger terminal assistant from 155th Air Transportation, sits at the passenger terminal working in GATES, a computer system guard members generally do not use unless deployed, at the 51st Fighter Wing passenger terminal, Osan Air Base, Republic of Korea, April 8, 2015. Members from the Nebraska Air National Guard traveled to the 51st FW on a two-week temporary duty assignment to receive hands-on, AFSC specific training with real-world active duty assignments.