A U.S. Air Force B-1B Lancer bombers assigned to the 37th Expeditionary Bomb Squadron, deployed from Ellsworth AFB, South Dakota, flies over a crowd during the 2017 Seoul Aerospace & Defense Exhibition (Seoul ADEX 17) at Seoul Airport, Republic of Korea Oct. 21, 2017. The B-1B Lancer, supported a U.S. Pacific Command (PACOM) continuous bomber presence (CBP) joint bilateral mission with the Koku Jieitai (Japan Air Self-Defense Force) and Republic of Korea Air Force. U.S. PACOM has been conducting routine CBP missions since March 2004. (U.S. Air Force photo by Staff Sgt. Alex Echols)