Not to be confused with FS, Federal Security Agency which was created in 1939 and abolished
in 1953. The class continued when its functions were transferred to the U.S. Department
of Health, Education, and Welfare (HEW) until 1969. HEW's class changed in 1969 to HE.
HEW was split in 1979 creating the U.S Department of Health and Human Services (HE)
and the U.S. Department of Education (ED)