Sinise exclusively speaks with ET about how he handled supporting both his late son, Mac, and wife, Moira, during their cancer battles.
Gary Sinise opens up to ET about the death of his son, Mac, and why he wanted to tell Mac's story on his foundation's website.
McCanna "Mac" Sinise died in January after battling cancer for more than five years. He was 33 years old.
Gary Sinise reveals his son, McCanna, also known as 'Mac,' has died following a battle with a rare cancer. He was 33.
The 'CSI: NY' star honored his late son with a message on his foundation's website.
The Gary Sinise Foundation is bringing holiday cheer to kids of fallen military heroes at the 2021 Virtual Snowball Express.
Some big stars came together to bring happiness to the children of fallen military heroes.
ET is taking a look at all of the celebs who joined Gary Sinise for his annual event held for the children of fallen military soldiers.
ET spoke with hosts Gary Sinise and Joe Mantegna about the 'National Memorial Day Concert,' airing Sunday at 8 p.m. on PBS.
KJ Apa and Britt Robertson star in the Jeremy Camp biopic, out March 13, 2020.
ET's Nischelle Turner caught up with Sinise to talk about his work serving vets and military families this holiday season.
The actor, who portrayed Forrest Gump, teamed up with other celebrities to create a surprise video for his former co-star.
ET was with Sinise at the airport, as he sent over 1,000 Gold Star children to Walt Disney World as part of the Gary Sinise Foundation.
The actor also reflected on filming 'Forrest Gump' ahead of the film's 25th anniversary.
