Over the Edge by Suzanne Brockmann

Her passion is flying. As one of the best helicopter pilots in the naval reserves, Lieutenant Teri Howe is tough, dedicated, and highly-skilled--until a past mistake surfaces, jeopardizing everything she's worked for. Rock steady Senior Chief Stan Wolchonok has made a career of solving problems. He willingly comes to Teri's aid, knowing that his personal code of honor--and perhaps his heart--will be at risk.