Alfred P. Murrah Federal Building houses the U.S. Department of Housing and Urban Development .
The building , named for federal judge Alfred P. Murrah , an Oklahoma native , opened on March 2 , 1977.By the 1990s , the building contained regional offices for the Social Security Administration , the United States Secret Service , the Department of Veterans Affairs vocational rehabilitation counseling center , the Drug Enforcement Administration ( D.E.A . ) , and the Bureau of Alcohol , Tobacco , and Firearms ( ATF ) .