Retired Navy vice admiral Samuel Gravely, former head of the Defense Communications Agency and the first black to become an admiral in the U.S. Navy, has joined CTEC Inc. of Falls Church as director of its Naval Programs Division.

His areas of expertise include: command, joint and international communications systems, cryptology, systems engineering, automated data processing, electronics, amphibious warfare, naval warfare, antisubmarine warfare, guided missiles and personnel management.

CTEC is engaged in command, control, communications and intelligence systems design and development.

Gravely's 34-year naval career began in 1942 when he enlisted in the U.S. Naval Reserve. He was commissioned as an ensign in 1944 and was named assistant battalion commander at the Naval Training Center in Great Lakes, Ill.

In the last months of World War II, Gravely served on a submarine chaser as communications officer, electronics officer and later as executive officer and personnel officer. In 1949, after being called back into active service, he served as assistant to the officer in charge for recruting at the Naval Recruiting Station and Officer Procurement in Washington.

In 1953 he transferred to the USS Toledo as communications officer and participated in action against North Korean and Chinese Communist forces. He joined the USS Seminole as operations officer in 1957. In 1960, Gravely became the exectuive officer of the destroyer U.S. Theodore E. Chandler and became commanding officer the next year. In 1962, he assumed command of the Radar Pickett Destroyer Escort, USS Falgout and in 1966, became commanding officer of the USS Taussig.

Gravely made rear admiral in 1971 and assumed duty as commander, naval communications command and director, naval communications divisions under the Chief of Naval Operations. In 1975, he assumed duties as commandant of the 11th Naval District until 1976 when he was named vice admiral. Later that year, he assumed command of the Third Fleet and most recently served as director of the Defense Communications Agency.