Photo is from the NSA 60th anniversary timeline: NSA Director LTG Marshall S. Carter, USA, observes class in progress during a 1967 visit.
April 30, 1965, Secretary of Defense McNamara approved designation of the National Cryptologic School. Today with more than 20 campuses, four cryptologic centers, and six cryptologic training schools, NSA is a true global training enterprise. With modern, mission-focused curriculums, NSA delivers career development solutions for every stage of your career.

Source: NSA.gov