What will Boeing & Sikorsky submit to replace Apaches and Blackhawks?Frank St. John, the new head of Lockheed Martin's Rotary & Mission Systems unit, discusses what changes could come to the Defiant aircraft.4 years ago
/What will Boeing & Sikorsky submit to replace Apaches and Blackhawks?Frank St. John, the new head of Lockheed Martin's Rotary & Mission Systems unit, discusses what changes could come to the Defiant aircraft.4 years ago