11. Witnesses in Nabatiyeh said Hezbollah's anti-aircraft units fired on the planes. 12. An anti-aircraft unit received a direct hit, killing one soldier and injuring four. 13. After six months recovering, he was posted to an anti-aircraft unit . 14. Raytheon Co . is reportedly struggling to find a buyer for its aircraft unit . 15. After an immediate post war hiatus, the army re-established peacetime anti-aircraft units in 1922. 16. Many Boeing insiders consider him the commercial aircraft unit 's next golden boy after Mulally. 17. The company didn't make any forecast for the aircraft unit , which is the largest. 18. Along with its aircraft unit , the company is expanding into military and satellite equipment. 19. Parts of Georgia's relatively modern artillery and anti-aircraft units were captured and later destroyed. 20. Alan Mulally, head of Boeing's commercial aircraft unit , said at a news conference Tuesday.
