While security operative Jason "Tuff" Tanner lives for dangerous assignments, he likes his downtime in his quiet neighborhood too. But that peacefulness is suddenly interrupted when his new next-door neighbor becomes a target for someone with nefarious intentions. Canine rescuer Concetta "Chet" Suarez brings all his protective instincts to the surface, along with feelings he's never experienced with any other woman. Will he lose her before he ever gets a chance to make her his? The Blackhawk Security series is a spinoff of the popular Trident Security series. \\\*Tuff Enough was previously published in the USA Today Bestselling anthology, Love Under Siege. New chapters have been added to this edition.

When Rylie Hart adopts her best friend’s daughter, in the wake of the woman’s untimely death, she goes from being an honorary aunt to a mother in the blink of an eye. Two years later, after kindergartner Mickey is diagnosed with leukemia, an anonymous donor is her only hope. Twelve months after retired Marine Raider and current Blackhawk Security CEO, Chase Dixon, found himself in a position to give a little girl the gift of life, he gets to meet her for the first time. Not only does she instantly steal his heart, but so does her mother. After Rylie receives legal documents contesting Mickey’s adoption, she discovers the secret her friend took to the grave. Once again, she finds herself fighting for her daughter’s life. Will Chase be able to come to their rescue one more time? Or will Rylie lose her little girl and the man she’s falling in love with?