Boeing E-3G, serial # 83-0009, the last U.S. Air Force E-3 Sentry built, is the milestone 12th aircraft nearing modification completion for the Internet Protocol Enabled Communications modification program as shown June 24, 2019, Tinker Air Force Base, Oklahoma. IPEC provides advanced networking capability to the E-3 fleet to further secure their role of air dominance in contested environments. (U.S. Air Force photo/Greg L. Davis)