A real life tragedy is a delicate subject to put on screen, especially one that features the incendiary topic of terrorism. Peter Berg largely strikes the necessary tone throughout Patriots Day, a dramatisation of the 2013 bombing of the Boston Marathon. The film expresses the horror of the situation without overplaying a sense of patriotism, nor being exploitative of the bomb victims. Berg’s great strength is his combination of CCTV, news and cell phone footage with standard cinematic techniques. Aerial shots of Boston provide the broad scale of the story, while shaky cam coverage places the viewer within the events. This blend of visual styles is especially effective in the immediate aftermath of the blasts as it conveys the chaos of a terrorist attack. Subsequent gun battles between the police and the bombers are similarly gripping, the viewer placed at an uncomfortable proximity to genuinely frightening violence. These sequences present the various unconnected figures involved in the marathon and the manhunt for the perpetrators, who are thankfully not presented as raving psychotics but as little men wanting glory. Scenes featuring bombers Dzhokhar and Tamerlan Tsarnaev (Alex Wolff and Themo Melikidze), as well as victims Jessica Kensky (Rachel Brosnahan), Patrick Downes (Christopher O’Shea) and Sean Collier (Jake Picking), as well as other people involved in the events demonstrate the randomness and indiscriminate nature of the attacks and their aftermath. The film’s weaker sections are those of coherence, as it slides into generic thriller territory closely connected to the professional redemption of Mark Wahlberg’s fictional cop Tommy Saunders. When Saunders interacts with the individuals actually involved in the attack and subsequent investigation – including police commissioner Ed Davis (John Goodman), Massachusetts governor Deval Patrick (Michael Beach) and special FBI agent Richard DesLauriers (Kevin Bacon) – the film’s coherence sits unevenly with the chaos of the blasts and disparate nature of the investigation. Overall Patriots Day is uneven, but its blending of different types of footage is effective and Berg is to be applauded for avoiding simplistic flag-waving.