Roy Young is a military contractor.
Some could say that he is a mercenary but that term has become something of a pejorative. Young identifies himself as a "private training consultant and for-hire military operative".
When we first meet him, on a short flashback to his starting days, he is 22 years old and described as "already well developed physically. At six foot two and 190 pounds, there was no fat, just muscle. His chiseled face was highlighted with azure-blue eyes beneath dark, heavy eyebrows. Although he’d been born in the UK, his years in South Africa had earned him a sallow tone, allowing him to tan well—a useful attribute that complemented a military lifestyle. It also saved time and money on sunblock. His fair-haired mane had been chopped to generic army-issue number-one length. Whether in army khaki or in an Armani tuxedo, Roy looked complete and confident."
The storyline then leaps back to the present and the year 2010, 21 years later and a much older and considerably wiser Young leaving the days of military training and getting himself involved in, though through no wish of his, in intrigue on a higher level. This includes matters inside the Vatican and even a call from an old adversary now needing his help - the President of the United States.