Diplomatic Security Service: Courier founder, Major Amos J. Peaslee (center) is flanked by the first group of couriers
Diplomatic Security Service: The Department of State’s Diplomatic Pouch and Mail Room, 1939.
Diplomatic Security Service: A U.S. Army courier delivers letters to the V-mail room at the Pentagon (1943).
Diplomatic Security Service: A Regional Security Officer consults with Marine Security Guard in 1946.
Diplomatic Security Service: A Diplomatic Courier (left) waits in the Department of State’s mail room in 1948 as diplomatic pouch contents are sorted and logged.
Diplomatic Security Service: Diplomatic Courier Ward Christensen displays his many passport visas (circa 1954).
Diplomatic Security Service: A Marine Security Guard Detachment stands with the Regional Security Officer (left) in Athens, Greece. (U.S. Marine Corps Photo)
Diplomatic Security Service: Diplomatic Courier Ray Irwin returns to the United States after an airplane crash in 1955.
Diplomatic Security Service: Special Agent William DeFossett receives an award in 1964 from SY Director Marvin Gentile.
Diplomatic Security Service: Marine Security Guard Post 1 at the U.S. Embassy in Jakarta, Indonesia, circa 1970.
Diplomatic Security Service: First BSAC Class
Diplomatic Security Service: Susan Shirley Carter the first female courier receives an award.
Diplomatic Security Service: Foreign Service National-Investigators Class I Circa 1980s
Diplomatic Security Service: Weapons Training Circa 1980s
Diplomatic Security Service: Antiterrorism Assistance Program Weapons Training Circa 1980s
Diplomatic Security Service: A Marine Security Guard takes a phone call at Post 1, circa 1980s
Diplomatic Security Service: A diplomatic courier prepares a pouch for transport, circa 1980.
Diplomatic Security Service: US Ambassadors Thomas Pickering & Jeane Kirkpatrick-El Salvador 1984
Diplomatic Security Service: Mobile Training Team conduct a weapons familiarization firing exercise 1985
Diplomatic Security Service: The United Kingdom's Prince Andrew (left of center, looking upwards) inspects aircraft while his DS security detail (Grace Dailey, center, wearing dark glasses) looks on, circa 1985.
Diplomatic Security Service: Ambassadors receive training in 1988
Diplomatic Security Service: DSS trainers simulate a terrorist incident aboard an airplane in 1988
Diplomatic Security Service: Police Defensive Tactics Being Taught by DS Training Instructor 1990
Diplomatic Security Service: Special Agents conduct raid training circa 1990s.
Diplomatic Security Service: Two DSS Special Agents from a Mobile Security Deployments team demonstrate countermoves
Diplomatic Security Service: The funeral procession for President John F. Kennedy, November 25, 1963.