Actor Gary Sinise helped send more than 600 families to Disney World this month through the Snowball Express, a program focused on the children of fallen military service members.

Sinise said in a post on Twitter that more than 1,000 Gold Star children are traveling with a parent to Disney through the program.

Over 1000 Gold Star Children travel w/ surviving parent, 1,750 in all, via @americanair to Disney World today as part of our @GarySiniseFound Snowball Express program. This charter left LAX this morning. I’ll join up in a few days. Have fun kids! We love you! pic.twitter.com/OfMEpVF1er — Gary Sinise (@GarySinise) December 8, 2018

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The Washington Examiner reported Wednesday that the Snowball Express started in 2006, but last year joined the Gary Sinise Foundation, which does community outreach, fundraisers and other events for first responders and members of the military.

The news outlet reported that participants in this year's Snowball Express met with Santa Claus at the Killeen Airport near Fort Hood, Texas, and the National Air Traffic Controller Association sent tote bags to those taking part in the program.

Sinise, known for his roles in "Forrest Gump" and "Apollo 13," has put on several charity events focused on military families over the years. The actor performs shows with his band for troops stationed overseas, and his foundation provides equipment for soldiers injured in combat, among other resources.