In the clip above, Berg and Mark Wahlberg, who plays Sgt.
We started playing Prince and everybody started dancing and holding hands and singing along, Berg started.
And what I thought was going to be really heavy and painful ended up being very joyful.
Berg then explained his decision to include a tribute to the survivors of the attack in the film.
Those people are the inspiration for us.
So it felt fitting that we kind of find a way to end the movie with the real people.
Wahlberg ends the clip with a plea for people to continue to support one another.
Thats a message, really, not just for Boston or New York or America.
These things are happening all over the world and we all need to come together.
Patriots Dayhits theaters on Dec. 21.
