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In page Columbia, Maryland:

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The U.S. federal government is the source of many jobs for Columbians. Several large U.S. Department of Defense installations and R&D facilities surround Columbia, the largest being the National Security Agency at Fort George G. Meade, and the Applied Physics Laboratory south of Columbia, both pre-dating the establishment of Columbia. Companies which have had research facilities in the area include W.R. Grace and Company. Further afield, many Columbians commute to government and government contractor jobs in the Baltimore and Washington, D.C. area.[citation needed][8]