Jake Gyllenhaal is filming 'Stronger.'

Stronger, a film based on the autobiographical book of a 2013 Boston bombing survivor Jeff Bauman, a Chelmsford native who went to the 2013 Boston Marathon to watch his girlfriend cross the finish line when the first bomb went off, taking both his legs.

Actor Jake Gyllenhaal is playing the bombing survivor, Jeff Bauman along with Tina Maslany as Buman’s girlfriend, now wife. You will also see Erin Hurley, Miranda Richardson as Bauman’s mom, Patty, and Clancy Brown as his dad, Jeff Bauman Sr.

The film is directed by David Gordon Green and is a production of Lionsgate’s Summit Entertainment.

 Gyllenhaal is currently filming ‘Stronger’, want to take a look?

Here you go, although it’s a twitter video with bird’s eye view!

This is the scene when Bauman waved a “Boston Strong” flag on the ice at the May 4, 2013, Bruins game.