[6] Montague joined the United States Navy in 1956 in Washington, D.C., as a clerk typist.

[4] She took computer programming at night school while continuing to work and learn the job.

By modifying existing automated systems, Montague produced the initial draft for the Oliver Hazard Perry-class frigate in about 19 hours.

[6] She later worked on ships such as the Seawolf-class submarine and the Nimitz-class aircraft carrier Dwight D. Eisenhower.

[3] Montague died of congestive heart failure on October 10, 2018, at Baptist Health Medical Center in Little Rock.