Charles Nicholls, Pacific Air Forces Historian briefs a group of Republic of Korea Air Force Public Affairs Officers on the air strikes of Dec. 7, 1941 in the Courtyard of Heros at Joint Base Peral Harbor-Hickam, Hawaii on Sept. 11, 2018. ROKAF officers visited PACAF/PA who facilitaed dialogue on the importance of communicating in an integrated, synchronized, and purposeful way to build a united PA system capable of achieving common operational goals in case of emergencies and bilateral operations. (U.S. Air Force photo by Master Sgt. Nadine Y. Barclay)