(CNN)Two months after he turned 90, Ernie Andrus wanted to do something special, a feat that people assumed at his age he couldn't complete.
A 95-year-old World War II veteran is crossing the country on foot -- for the second time
Over the course of two years and 10 months, over 2,631 miles, he crossed the country on foot, running from California to Georgia. He finished in August 2016, one day after his 93rd birthday.
"I could never turn down the chance for an adventure," he told CNN by telephone Wednesday.
At age 95, the World War II veteran has decided to do it again.
He celebrated the Fourth of July with a slow run through the Florida Panhandle town of Monticello. He's clocked 175 miles into his second coast-to-coast trek, which he began in March when he left from Georgia's St. Simons Island.
Andrus expects it'll take him five years to make his way from the Atlantic to the Pacific Ocean.
He hopes to run 13 miles a week through grueling heat or freezing cold for as long as he can. It's an effort he hopes will attract the attention of the branch of the military in which he served.
As he runs, the Navy veteran is raising funds to sail a restored World War II tanker to Normandy for a D-Day anniversary, a feat that he says will cost millions.
"If I make it all the way, I'll be about 100 years old," he said. "And if a 100-year-old man can run coast to coast, the Navy can give us some help."
Andrus served in the Navy's Hospital Corps during World War II, manning the sick bay on a landing ship tanker or LST in the Pacific Ocean. His position didn't see much action, so he would stick his head through the porthole to "see the fireworks," he said.
Even when he was a young man, running served as a release for Andrus. When pangs of depression struck, he'd hop off the ship and take off running on the Pacific islands where it was stationed. The damp heat kept those runs short, he said.
When he and his shipmates caught wind that a mostly intact LST, the last of its kind, was docked off the coast of Crete, they set out to restore it to its former glory so it could serve as a memorial.
The team spent months repairing the ship to resume full operation and set out to sail from Greece to Mobile, Alabama, but Andrus was benched at his doctor's request. He hopped right back on when it docked in the United S