Crew members from the 513th Air Control Group board the Boeing E-3 Sentry aircraft at Joint Base Pearl Harbor-Hickam on Jan. 24. 2018 as part of Sentry Aloha exercises. Reservist from the 513th Air Control Group provide command and control for Sentry Aloha 18-1. (U.S. Air National Guard Photo by Staff Sgt. James Ro)