The Boeing Co. is expanding its St. Louis-area operations with the planned opening of a manufacturing facility at MidAmerica Airport in Mascoutah, IL. The facility, tentatively scheduled to open late this year or in early 2011, will use leased space in an existing building to house assembly and subassembly work. It is expected to initially bring approximately 75 new manufacturing jobs to Illinois. Boeing and St. Clair County are entering into a long-term lease for the existing 50,000-ft2 building, which is the first Boeing manufacturing center in Illinois. Home to Boeing Defense, Space & Security headquarters, the Boeing St. Louis site has approximately 16,000 employees and is Missouri’s largest manufacturer and second-largest employer. Key products manufactured at the site include the F/A-18, F-15, C-17, and weapons.