When Chloe introduces her sister she said she served in "The First Armory Division". Close but not right, the Old Ironsides patch she's wearing belongs to the First Armor Division.
The movie takes place and it was shot in Tennessee just before Christmas. However, it was shot in the late summer. There is lot of green and brownish deciduous trees, and bushes. Production actually tried minimally to mask it with barely any artificial snow around trees and various objects. In the every outside scene, you can hear bird singing, and birds don't sing in autumn and winter. Also, cast didn't wear typical winter clothes either as it was warm.
Chloe said she was honorably discharged after 6 years yet her picture showing 2nd LT rank. This is very unusual since a 6 years officer should already be a Captain or even Major (if very well performed) unless some severe disciplinary actions happened which also guaranteed at least something less than an honorable discharge.
Cloe saw the photo of Ret. Capt. Michael Fischer with the kids in his file, and later she showed him. He said to her that he served the last ten years in Afghanistan, and later he confirmed that he collected toys for the kids there for Christmas. However, photo shows that kids held Turkish flags, not Afghani one. Furthermore, both countries are Muslim so there is no Christmas celebration either.
Around 4 min, Cloe enters US Army base. When she entered in Col. Doug Cole office she said "Hi dad", and he said: "Hi". In the next scene at her mother's cafe, it's revealed that her mother is actually a widow.