Childs, Lisa. Hotshot heroes

Harlequin romantic suspense #2292

"Mack McRooney is retired from military special ops, but there's one final mission he has to take on--catch the saboteur targeting his brother-in-law's firefighting team...even if that means becoming a firefighter himself. Partnering with state trooper Wynona Wells, however, was not part of the plan. Mack and Wynona are fighting their fiery attraction to one another and a deadly saboteur. And if they lose this fight, they might just also lose their lives..."--Amazon