"Actor Gary Sinise Mourns the Loss of Son Mac, 33, to Rare Cancer"

Mac Sinise, son of actor Gary Sinise, passed away at 33 after battling a rare form of cancer called Chordoma. He was an accomplished drummer and had performed alongside his father in the Lt. Dan Band. Despite his illness, he learned to play the harmonica and worked on an album of music called “Resurrection & Revival.” His family, including his father, is heartbroken by the loss but finds comfort in knowing that Mac is no longer suffering.