A U.S. Air Force F-22 Raptor aircraft assigned to the 199th Fighter Squadron, Hawaii Air National Guard takes off from Joint Base Pearl Harbor-Hickam, Hawaii, July 23, 2014, during Rim of the Pacific (RIMPAC) 2014. RIMPAC is a U.S. Pacific Fleet-hosted biennial multinational maritime exercise designed to foster and sustain international cooperation on the security of the world's oceans. A portion of this image was altered for security purposes. (U.S. Air Force photo by Senior Airman James Richardson/Released)