Jake Larson joined the U.S. Army National Guard in 1938 in order to earn money and help his family during the Great Depression. He was just 15 years old. By late 1941, he was preparing to leave the service. After Japan attacked Pearl Harbor, the Army required him to stay. By 1942, he was in England helping to train American forces assigned for invasions in North Africa and in the European theater. Finally, Larson himself was part of an invasion - the largest amphibious assault in history - the D-Day invasion in Normandy.

In this edition of "Veterans Chronicles," Larson details his top secret work on the D-Day invasion olans long before most troops knew what was coming. He also shares tremendous detail about coming ashore at Omaha Beach, being under fire from German machine guns, and how he made it up the bluffs.

Larson also chronicles several close calls at Omaha Beach, including how a very unwelcome assignment likely saved his life. And he does his best to convey what the invasion sounded like that day.

Finally, at age 101, Larson discusses the responsibility he feels as one of the final D-Day survivors to tell his story, the stories of the men who never made it homr, and the stories of the veterans who have passed on.