The General's Son. Guardian Chronicles, #1

Daniel Broderick, a highly skilled sniper, is the only son of General Broderick, the respected Special Forces Commander. Despite Dan's unparalleled abilities, he rejected his father's legacy, vowing never to follow in his footsteps. Yet, fate intervenes when he and his best friend, Brody Hunter, are fast-tracked into an elite, covert Guardian unit. Rumors of nepotism sow distrust. The situation intensifies when Dan receives a rude welcome from his new teammates.
He erects defensive walls, isolating himself, but Dan willingly risks his life to ensure their safety as his unit embarks on dangerous missions. Unbeknownst to all, Major Plouffe, a bitter officer, plans to destroy his nemesis, General Broderick. Unfortunately, Dan's estrangement from his father and trust issues-rooted in a traumatic childhood event-make him the perfect pawn for the major's scheme.
Betrayal, loyalty, and survival collide when every decision could mean life or death. As the lines between ally and enemy blur, Dan must confront moral dilemmas, personal conflicts, the haunting past that shapes him, and the deadly game being played around him.