During the 1960s and 1970s, NCSC funded its activities largely through the use of federal funds. In 1965, President Johnson signed the Older Americans Act. Title V of the act created Operation Mainstream, which funded part-time employment for under-employed people aged 55 or older. In 1967, Operation Mainstream was renamed the Senior Community Service Employment Program (SCSEP). The United States Department of Labor in 1968 chose NCSC as one of the organizations designated to operate SCSEP. NCSC called its program the Senior Alert, Industrious, Dedicated, Energetic Service ("Senior AIDES").