United States, June 26 -- Vertex Aerospace LLC, Madison, Mississippi, has been awarded a ceiling $500,000,000 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for contractor logistic support services for the Air Force C-12 aircraft fleet. This contract provides time-sensitive movement of personnel, cargo, and medical evacuation, as well as test support for Air Force Materiel Command, Defense Intelligence Agency, Defense Security Cooperation Agency, and Pacific Air Forces.Work will be performed at Joint Base Elmendorf-Richardson, Alaska; Edwards Air Force Base, California; Joint Base Andrews, Maryland; Madison, Mississippi; Holloman Air Force Base, New Mexico; Okmulgee, Oklahoma; San Angelo, Texas; Buenos Aires, Argentina; ...