Brady Kinin is an agent with the DSA.
That is the Defense Security Agency, "a civilian agency of the Department of Defense. They conducted intelligence gathering around the world. Their primary focus was to go out on the local economy around U.S. military bases worldwide. They were looking for direct threats against base or personnel. The DSA conducted very few operations, usually only if something fell in their lap."
That said, we are told the DSA "did offer support to the CIA if there was an operation that may need military support. Brady was assigned these types of missions more and more, as he was good at thinking on the run and quick improvisation. He would not be involved in the mission but he would be as close as possible, usually teamed with the CIA agent in charge of the operation. Brady knew all of the military units and their capabilities within the area of the mission. And as usual, operations seldom went as planned and the needs often changed rapidly. Being with the DOD gave Brady more rapid access to military assets. The CIA was very reluctant to share any more information about an operation than was necessary. However, usually the agent he teamed with was very sharing of information. This field agent knew that if things went wrong there would not be much time to explain the whole picture well enough for Brady to make the best decision."
Kinin comes to the DSA by way of a lengthy career in the U.S. Army which he joined in 1972 fresh from graduating college. A brief time in Officer Candidate School was followed by a stint in Vietnam. At that point his skill in Spanish and French got him transferred to NATA headquarters and work under the command of Commander Andy Phillips, an Intelligence Officer. This is significant as Phillips would over the next few years teach the young Kinin the ins and outs of intelligence gathering.
When Phillips made the transition to the DSA, he would soon bring Kinin in as well and for the past few years, Kinin has been one of those few DSA field agents.
The skill with languages mentioned came from his childhood. He gained a near-native ability at Spanish thanks to being best friends with a Cuban neighbor kid when he was growing up in Houston. He also has a firm grasp of French thanks to a Cajun ancestry and a grandmother who was a fluent speaker.
Kinin is single and as far as I can determine never had a lasting romantic relationship although he will become quite close to and good friends with a female CIA agent he met as 'Sofi'. A woman in her mid-thirties with black hair and a black complexion, she could pass easily as either of Mediterranean or Hispanic descent. Her real name is Jennie Rice but she used the name 'Sofi' as her covername. In each of the recorded adventures we have of Kinin, she will play a key role.