I feel like you have to have some sort of connection to dogs at the very least to comprehend the reason behind plot. Bonus if you're LE or a MWD Handler. These dogs are technically equipment, but they're so much more. They're a lifeline. Jake (Aaron Eckhart) has a military background and an LE job with a very expensive piece of equipment for a partner, multiple actually. (Ace and Sox/Socks) Right off from the start you get an insight to how he leans on this dog; he has full blown conversations while on patrol. (Any *loving* dog parent can tell you, we all have full blown convos with our dog. Sometimes even talking back to ourselves as the dog. LOL)
The fact the dogs in this story line were taken and turned into weapons for the bad (versus the greater good) is the heartbreaking part. The dogs are mere pawns. Jake is having none of it.
I don't quite grasp the negative reviews of this film. Was it a blockbuster? No. Did it keep my attention? Absolutely. (Which is no easy feat.) This is worth a rewatch down the line as well.
Overall, great movie. Not a 10, but great nonetheless.