Francis C. Belcher, 90, a retired Air Force major who went on to spend 20 years as a special agent with what is now the Defense Department’s Defense Security Service, died Feb. 3 at the Charlotte Hall Veterans Home in Southern Maryland.

The cause was a heart ailment. A son, retired Marine Col. Michael F. Belcher, confirmed the death.

Maj. Belcher served in the Marine Corps in the Pacific during World War II. He joined the Air Force in 1951 and became an intelligence officer with the Office of Special Investigations. His postings included Spain, Japan and the Philippines before retiring from the military in 1968.

At the Defense Department, he helped process security clearances, including for personnel working on Air Force One, his son said.

Francis Charles Belcher was a born in Cassandra, Pa., and grew up on military installations as his father pursued a career in the Marine Corps. He was a 1951 graduate of the University of Maryland.

He was a member of Holy Family Catholic Church in Hillcrest Heights and was a Hillcrest Heights resident. He golfed at facilities at Andrews Air Force Base.

Besides his son, of Stafford, survivors include his wife of 66 years, Gladys Vantaman Belcher of Hillcrest Heights; two daughters, Pamela Schoessler of Oxford, Pa., and Nancy Gaffney of Jonesboro, Ga.; six grandchildren; and six great-grandchildren.

— Adam Bernstein