Daniel J. Kritenbrink, U.S. Ambassador to Vietnam gives a speech during the Pacific Angel (PAC ANGEL) 18-2 closing ceremony at Tien Tho Primary School in Tien Tho commune, Tien Phuoc district, Vietnam, Sept. 17, 2018. PAC ANGEL is a multilateral humanitarian assistance civil military engagement, which improves military-to-military partnerships in the Indo-Pacific while also providing medical health outreach, civic engineering projects and subject matter exchanges among partner forces. (U.S. Air Force photo by Senior Airman Javier Alvarez)