One could listen for hours to the experiences and stories this man has to tell. What an honor to photograph a veteran of the Submarine Forces.
Professional archival prints, laid into archival-quality mats and frames with UV protection can preserve your most special portraits for 100 years. That's longer than the JPG format will last and much more endearing to look at and share in your home. When it's really special, save your digital files correctly and then print and display.