Major Stephen Wolf, an entomologist from Kadena Air Base, Japan, picks up a Center for Disease Control-approved mosquito trap he set the previous day at the Lapaz barangay during Operation Pacific Angel in Laoag, Philippines, Feb. 16, 2010. Major Wolf will conduct tests on the adult mosquitoes collected to see if they possess the Dengue virus during a vector surveillance subject-matter expert exchange for Operation Pacific Angel. Operation Pacific Angel is a Pacific Air Forces joint and combined humanitarian assistance operation conducted in the Pacific and led by 13th Air Force. (U.S. Air Force Photo/Capt. Genieve David)