Heat of the Knight (Knight Ops #2)
Em Petrova

But the mysterious Creole woman he wants isn’t interested in his bed—because she’s working alongside him to find a missing nuclear warhead.
When six feet two inches of sexy steel in camo walks into Elise’s office and decrees she’s working with him, she knows Sean is the type of man she wants to avoid. Though their late nights spent cracking codes are making it hard to stay on task. Who can blame her when Sean Knight is packing heat in all ways? While their work takes priority, she can’t help but think deciphering Sean is worth her while, especially when the hard-ass man admits that lately he’s been wondering how it feels to be with a woman who actually cares if he returns home safe after these dangerous missions.