USFK CC visits HTACC Published March 15, 2013 OSAN AIR BASE, Republic of Korea -- U.S. Army Gen. James D. Thurman, commander of Combined Forces Command, talks to Republic of Korea Air Force Lt. Gen. Park Sin Gyu, Air Force Operations Center commander and other members of ROKAF in a brief during Exercise Key Resolve on Osan Air Base, ROK, March 15, 2013. Exercise Key Resolve is an annual combined and joint command post exercise that is executed under various scenarios with the purpose of honing skills necessary to defend the Republic of Korea.