"We've got a bond nobody could ever break," said Bill Jones, a Marine veteran.
Jones is referring to his dog.
"She's been a pet but also therapy for me, just like family," Jones said.
The pair is part of Salute of Service, a Maine-based service dog training program for veterans.
The non-profit offers free training to help service men and women.
"We serve veterans from any era with any disability," said Kathy Hecht, president and head trainer at Salute of Service.
All dogs are trained to help with PTSD, as well as other services to cater to each veteran's needs.
"She helps me with mobility and stability and can detect whether my blood sugar is high or low," said Billie Ward, a U.S. Navy veteran.
"It lets them basically do and enjoy everything they did prior to going into the service," said Hecht.
What's unique about this program is that the veterans train directly with the dog, building a relationship from day one.
"The veterans actually get the benefit of being able to say they trained their own dog," said Hecht. "The training process helps them with the healing process."
This experience gives a new meaning to the term "man's best friend".
"Indy is all of that and a lot more," Ward said. "Indy found me freedom, independence."
Salute of Service is always accepting donations to begin training more teams. For more information, check out the Salute of Service Facebook page or call Kathy Hecht at (207) 323-4460.