BAE's US Chief Quits to Join Military-Science Contractor SAICBloombergBy Sabine Pirone June 22 (Bloomberg) -- BAE Systems Plc, Europe's biggest weapons maker, said Chief Operating Officer Walt Havenstein has quit to become chief executive at San Diego-based defense contractor Science Applications International Corp.BAE Systems president resigns Bizjournals.comBAE Systems CEO Walt Havenstein resigns ForbesWall Street Journal - ExecutiveBiz - This is London - Business Wire (press release)all 37 news articles