Gary Sinise attendds the 25th National Memorial Day Concert at the U.S. Capitol, West Lawn, May 25, 2014, in Washington.

Gary Sinise during production of the film 'Of Mice And Men', 1992.

Gary Sinise, as Lt. Dan, in a scene from "Forrest Gump."

Gary Sinise in a scene from the film 'Apollo 13', 1995.

Gary Sinise in a scene from the movie "Ransom," 1996.

Gary Sinese shows off his Emmy during the 50th Annual Emmy Awards at the Shrine Auditorium in Los Angeles.

Nicolas Cage, left, and Gary Sinise in a scene from the film 'Snake Eyes', 1998.

Gary Sinise and Madeleine Stowe in a scene from "Impostor," 2001.

Gary Sinise, left, as Jim McConnell examines the suspended DNA model that Phil Ohlmyer, played by Jerry O'Connell, has created with candy in movie "Mission To Mars."

Moira Harris and Gary Sinise, with his family, attend the world premiere of "The Cat In The Hat" at Universal Studios Cinemas in Hollywood, Calif.

Gary Sinise sings "Take Me Out To The Ballgame" during the seventh inning stretch of game two of the National League Championship Series between the Florida Marlins and the Chicago Cubs, Oct. 8, 2003, at Wrigley Field in Chicago.

Gary Sinise performs a concert for soldiers at the Fort Polk Army post, June 24, 2004, in Louisiana. Sinise an Academy Award nominated actor stopped at the Central Louisiana post on the first a 10 day USO tour of military installations in the United States.

Gary Sinise, left, shakes the hand of Army Capt. Marc Melton after autographing a copy of the book '??Forest Gump'?� for Melton at Fort Polk, Louisiana, June 24, 2004.

Melina Kanakaredes and Gary Sinise in a scene from the CBS show CSI: Miami, May 1, 2004.

Gary Sinise stars as Det. Mac Taylor in a scene from CSI: NY.