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Browse 40+ stone plaque old wall stock videos and clips available to use in your projects, or start a new search to explore more stock footage and b-roll video clips. Latin plaque of San Lorenzo in ...

the National Cryptologic Museum taped sheets of paper over plaques that celebrate women and people of color who had served the National Security Agency, which intercepts overseas conversations and ...

Sponsor Message The honorees are described as "Trailblazers in U.S. Cryptologic History," and the plaques hang in the museum's Hall of Honor. When Larry Pfeiffer, who spent two decades at the NSA ...