Commanding Sia (NCIS Series Book 1) by Zoe Dawson

Separated by loss. . .reunited by duty… When Lieutenant Ambrosia “Sia” Soto returns from an investigation into a “pilot error” case aboard the aircraft carrier U.S.S. James McCloud, she comes face to face with NCIS Special Agent and former lover, Christophe Vargas, the man who was involved in an F-18 Fighter Jet accident that took her brother’s life six years ago. But when another incident aboard the carrier involves the death of a senator’s son whose plane crashed into the deck on a routine training mission, she’s now required to return to the carrier with Chris in tow to face a cunning and dangerous foe. Bombarded both personally and professionally, Sia must trust her instincts and suppress the feelings that surface for her enigmatic and sexy partner.