The 26-year-old actor was joined on set by his co-star Jesse L. Martin.
That same day, Grant posted a cute Instagram photo with his dog hanging outside his trailer.
“Jett’s looking good with his summer cut and I’m easily distracted while taking us-ies of me and the dogs. Gotta use that first take though,” he captioned the pic, which you can see below.
15+ pictures inside of Grant Gustin and Jesse L. Martin shooting the third season… More Here! »