On his 75th mission, just five days before the end of his tour, Plumb was shot down over Hanoi, taken prisoner, tortured, and spent the next 2,103 days in North Vietnamese Prisoner of War camps. His first prison cell was 8 ft. long and 8 ft. wide. During his nearly six years of captivity, Plumb distinguished himself as a pro in underground communications. He was a great inspiration to all the other POWs and served as chaplain for two years.

Following his repatriation, Plumb continued his Navy flying career in Reserve Squadrons where he flew A-4 Sky Hawks, A-7 Corsairs and FA-18 Hornets. His last two commands as a Naval Reservist were on the Aircraft Carrier Corral Sea and at a Fighter Air Wing in California. He retired from the United States Navy with the rank of Captain after 31 years of service.

To this day, Captain Plumb continues to fly left seat at every opportunity. The most treasured plane he owns and flies is a WWII PT-19 Open-Cockpit antique which is currently on loan to the Palm Springs, CA Air Museum. He also owns a Rutan-designed experimental single-engine Long-Eze.

Since his return home, Plumb has captivated more than 5,000 audiences in almost every industry around the world with stories that parallel his POW experience with the challenges of everyday life.