ST. LOUIS (AP) – Boeing Co. says it plans to move about 2,500 positions to other sites, cut 500 jobs, and close two facilities by the end of 2020 as part of an effort to operate its Defense, Space & Security business more efficiently.

The company said Tuesday that about 1,600 positions currently in Huntington Beach, California, will move to plants in three other Southern California locations — El Segundo, Long Beach and Seal Beach. About 500 positions will move to St. Louis County in Missouri, and 400 will shift to Huntsville, Alabama.

Chicago-based Boeing will close a plant that employs 290 people in in El Paso, Texas, and another that employs 70 people in Newington, Virginia.

The company said the moves will reduce facility space by about 4.5 million square feet.