Boeing will begin preliminary design work for the Presidential Aircraft Recapitalization under a contract worth roughly $600 million awarded Tuesday, the Air Force said this week. Over the next 18 months, Boeing will decide how to install mission communications, self-defense measures and medical facilities into two 747-8 jets, which will be able to autonomously generate power on the ground and in flight. Defense One recently reported the next Air Force One aircraft will not be able to refuel in flight...