O Christmas Knight (Knight Ops #6)
Em Petrova

Bo has always loved a strong woman, but a stubborn one? No way. After trying to rescue Tyler and her team, he finds the woman impossible—beautiful and sexy as hell, but impossible. Even though Tyler views backing down as wimpy, he has other priorities, and that is getting her home to her family alive.
It's not long before Tyler's stubborn pride has her running, but this time Bo's having none of it, even if he has to dip into some very special Christmas magic to make her see how strong they are together.
Other Books in the Knight Ops Series
All Knighter
Heat of the Knight
Hot Louisiana Knight
After MidKnight
Knight Shift
and coming soon: Angel of the Knight in December 2018