Photo: Tim Lundin/Gary Sinise Foundation

2018 Invincible Spirit Festival at Walter Reed National Military Medical Center on May 24, 2018.

AlthoughGary Sinisedidn’t initially set out for a career in service, after four decades of making a difference for military veterans and first responders, he’s exactly where he’s supposed to be.

Sinise, 63, who reflects on his journey from “self to service” in his new bookGrateful American, details the major turning points in his life, which include learning the details of his family connections to the military, playing Lieutenant Dan inForrest Gumpand feeling “broken” after the terrorist attacks on 9/11.

“I’ve found that service is the best way to heal,” he tells PEOPLE in the latest issue. Sinise’s foundationThe Gary Sinise Foundationnow raises now raises $30 million annually – 90% of which goes toward the organization’s programs, like building specially adapted smart homes for severely disabled vets and bringing military families to Disney World.

“If every person in every neighborhood around the country took a little bit of responsibility for patting these folks on the back, all the problems that we hear about with regards to veterans not getting services or falling through the cracks would disappear,” he says. “If citizens would look at their freedom providers in a little bit different way.”

Gary Sinise with specially-adapted smart home recipient and veteran Christian Brown in 2017.Julia Robinson/Gary Sinise foundation

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Sinise’s military connections run deep. His grandfather served in WWI, two uncles fought in WWII and his father in the Korean War. He says he learned a lot about the Vietnam War from his brothers-in-law.

For much more on Gary Sinise and what inspired his decades of service work, pick up the latest issue of PEOPLE on newsstands Friday.

“All during the Vietnam War, I was just a high school kid playing in bands and getting in trouble,” says Sinise. “I felt guilty that, when they were off at war, I was oblivious to what they were going through. I’ve just tried to give them something back.”

Landing the role of Lt. Dan in 1994’s Oscar winnerForrest Gumphelped open up that opportunity for Sinise to give back in a major way, beginning with appearances at military conventions and later full USO tours.

Sinise visiting a veteran at San Diego’s Naval Medical Center in 2018.Julia Robinson/Gary Sinise foundation

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“He’s more than a character in a movie,” Sinise writes inGrateful American. “To these veterans, he has become a symbol of awareness for our country’s collective awareness of all our injured veterans, especially the Vietnam veteran.”’

The love for the caustic, paraplegic character “has grown beyond anything I could ever imagine,” he says.

The September 11th terrorist attacks further cemented Sinise’s service-leaning interests. “Because everything changed,” he says. “I started pushing myself into service work.”

“I admire how genuine Gary is considering how many lives he’s reached, how much he has helped veterans,” saysRet. Army Sgt. Caleb Brewer, who lost both his legs in Afghanistan and recently moved into a new smart home — the Sinise Foundation’s 59th — in Tuscon, AZ on Feb. 6. “Gary is a beacon of light in our world.”

source: people.com