John Medina is an agent with the CIA.
He is said to be the best the Agency has in the field of Black Ops. He operates best in the shadows, known by only a handful of people. Using aliases whenever possible, he prefers to work alone. Loyalty is his strongest virtue; once a friend you're a friend for life.
In the two-book series in which Medina operates, the main characters are those who get involved in the assignments, not Medina himself, although he plays a key role in both, especially the second. When he does step in, however, it is to bring the situation to a satisfactory conclusion.
To look at Medina is to think him an Ivy League lawyer or lobbyist by the manicure, the perfect hair, the tailored suits, and the steely look in his eyes. The thought would be wrong. To his supervisor, a man with far too many years controlling agents in the field, Medina is the most dangerous man he had ever met.
Medina had a way of looking at a problem like few others. It was as though he saw the facts and then saw past them, like a master chess player. His skills with a computer were remarkable, taught to him by an expert. His skills at killing were ever more impressive.
Few people really knew Medina. A few thought they might but he had a reticence about revealing too much to anyone, a trait taught him by his father, a legendary CIA operative himself.
Medina is a former Seal who had excelled at the rigorous training they had put him through. He was an excellent pilot, could sail a boat with ease. Furthermore, he "could set a bone, and probably sew a dress." Medina did most things well.
Medina was known to be a widower, having lost his wife many years before when they were both still fairly young. How she died was still a mystery to most but the stories in the Agency were that she had been a double agent working for the KGB and Medina had found her out. The rumor was that he took her out himself.
Medina is not a man to mess with. Ever.