Blake Carver is an agent for the President.
At 39 years of age, Carver had been content in his chosen profession. After 16 years of doing it, he had no interest in any other line of work and would likely have expected to go nearly another decade and a half to retirement. Things would not work out like he had expected.
After a success mission, he was flying back to Langley when he was met by two Secret Service agents and driven to the Eisenhower Building adjacent to the White House. There he met the President's Chief of Staff, Julian Speers, who informed him that he, along with NSA analyst/agent Meagan O'Keefe, were being ordered to resign from government service, official service at least. From that day on they answered to Speers on behalf of the President. The fact that Speers himself did not feel qualified to direct the project they would be working did not matter to the President and thus could not matter to either Carter or O'Keefe. Speers was their new boss.
Carver, considered ruggedly handsome by most people with his "chiseled features", is an enigma to many of his colleagues because while he is very much like them in his professional life, doing whatever is necessary to get the job done, he is a great deal different than them in his personal life. "He had been raised Mormon in a predominantly LDS town in rural northern Arizona. He'd long since quit the LDS Church, but the religion's edicts of clean living still agreed with him. The nature of Carver's work kept him from living a saintly life, but he still treated his body like a temple. To this day, he'd never touched alcohol." Most people have a hard time dealing with a co-worker without at least one or two of their own bad habits. Carver has dealt with this long enough to recognize it and then ignore it.
When it comes to doing his job, though, he is a total realist who will do what it takes to accomplish the mission, even if it might mean, as it did on one occasion, picking up a power saw and a bottle of acid to remove a troublesome body. He might not like it and he certainly does not enjoy it but he does what he has to do.