With the Navy's final order for multimission MH-60R helicopters recently placed, Lockheed Martin now expects orders from foreign customers for the anti-surface and submarine-hunting aircraft to keep the production line going for at least another two years, according to a company official. In November, the Navy awarded Lockheed Martin Rotary and Mission Systems a $392 million contract for eight MH-60Rs, pushing the development and procurement costs for the Romeo fleet -- begun in 2004 -- beyond $13 billion and raising...