So many members of the U.S. military won't be able to spend time with their families this holiday season, and Gary Sinise wanted to do something special for them. His foundation gathered a number of A-Listers to create a heartwarming video. Watch Tom Hanks, Angelina Jolie, Jimmy Kimmel, Mark Wahlberg, Kaley Cuoco, Chris Pratt and others spread the festive cheer.