M. L. Buchman 
Road to the Fire’s Heart [EPUB ebook] 

-a Firehawks Hotshots romance story-
Wildfire engine driver Jill Conway-Jones loves driving the big engines, but her real goal is to get up close and personal with a fire, just like the Interagency Hotshots. She gets a little too close when a burning tree crashes onto her fire engine.
Hotshot Jess Monroe loves the fire’s heat, but can’t seem to find a woman who sparks his own. At least not until he arrives to rescue the driver of the shattered truck—just in time to watch her kick out the windshield.
And that’s only the first turn on the Road to the Fire’s Heart.