Maine mass shooter's family says his 'brain was hijacked' by injuries tied to his military service
![Maine mass shooter's family says his 'brain was hijacked' by injuries tied to his military service](https://media-cldnry.s-nbcnews.com/image/upload/t_fit_1500w/rockcms/2024-05/240516-lewiston-maine-shooting-james-herling-mn-1140-5ace56.jpg)
The family of the Army reservist who perpetrated Maine's deadliest mass shooting says he had a "severe" traumatic brain injury tied to his service as a hand grenade training instructor.