U.S. Air Force Master Sgt. Mark Hoover, 36th Contingency Response Support Squadron air advisor, shares his expertise on runway conditions during a subject-matter expert exchange, July 24, 2019 in Ulaanbaatar, Mongolia as part of Pacific Angel 2019. Efforts undertaken during PAC ANGEL 19 help the U.S. and partner nations improve and build relationships across a wide spectrum of civic engagements, bolstering each nation’s capacity to respond and support future humanitarian assistance and disaster relief operations. (U.S. Air Force photo by 2nd Lt. Joshua Thompson)