CBS Films and Lionsgate has released this teaser trailer for Patriots Day, the Peter Berg-directed film based on the 2013 bombing at the finish line of the Boston Marathon. Mark Wahlberg plays police sergeant Tommy Saunders, who joins survivors and first responders on the scene and investigators as the community rallies to successfully hunt down the bombers before they can strike again. Kevin Bacon plays Special Agent Richard DesLauriers, John Goodman plays police commissioner Ed Davis, JK Simmons plays Sergeant Jeffrey Pugliese and Michelle Monaghan plays nurse Carol Saunders in a drama that the film’s makers said celebrates the strength of the people of Boston. Pic will be platformed in Boston, New York and Los Angeles December 21 and opens wide January 13.