Finding himself at the very edge of his existence, Montalván found the strength he needed to recover the physical and psychological wounds of war in the heart of the Golden Retriever, Tuesday.

Pt. 1. Tuesday: Motherly love -- Puppy behind bars -- The lost boys -- pt. 2. Luis: Al-Waleed -- An American soldier -- Anything but stable -- Hard decisions -- The thought of dogs -- pt. 3.Tuesday and Luis: The first choice -- Company -- The right dog --The first test -- Thanksgiving -- Smoked -- Cats and dogs -- Hope and change -- The back of the bus -- Tuesday's handle -- Tuesday talks -- Summer days -- Crash and groom -- The little things -- For veterans everywhere -- A quiet life.