Osan Airmen respond to simulated bus crash Published April 25, 2012 By Senior Airman Adam Grant 51st Fighter Wing Public Affairs OSAN AIR BASE, Republic of Korea -- Osan Airmen responded to a simulated bus crash during the Operational Readiness Exercise portion of the Consolidated Unit Inspection here, April 23, 2012. A Pacific Air Forces Inspector General team came to Osan to grade the base on emergency management and unit compliance. The CUI aligns inspections during different leadership cycles to check for operational readiness and unit compliance.