Mischief and Mayhem by Jaxon Knight

Mischief:
Protecting royalty at Fairyland theme park seemed about as far from Afghanistan as Cody could get. But the hot new rollercoaster brings up some unexpected trouble – and not the kind of trouble he knows how to handle alone.

Mayhem:
Dean loves running the Spaceship Mayhem roller coaster – he gets to meet new people every day! When he sees a handsome, troubled security guard repeatedly fail to ride it, he sees an opportunity to help. And maybe they can be more than friends?
Cody reluctantly accepts cute, boy-next-door Dean’s help and sparks fly between them, but between mischief, mayhem and miscommunication, can they ever make a relationship work?