Down to the Wire

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
LAWMAN TO THE RESCUE 

Who placed the bomb under schoolteacher Tess Collins's classroom deskand why? There's only one man who can save TessSWAT cop Declan Shaw. Her survival depends on him defusing the bomb and protecting her from an unknown enemy. He can't afford to be distracted by the alluring beauty who was his onetime high school crush. But keeping her safe soon becomes more than just a job for the highly trained explosives expert. And it'll take all his professional skills to catch the madman targeting Tess before it's too late. 

SWAT: TOP COPSLove in the line of duty