Early 21st Century
Tactical Reconnoitering and Acquisition Team (TRAT) is a specialist organisation associated with the US Army, from where most TRAT members are recruited. TRAT carry out black ops on the army's behalf. As such, their weapons tend to be cutting-edge.
The leader of TRAT resigns to form Secret Operation Raid Team (SORT), which causes an ongoing rivalry between the two organisations. SORT tends to focus on espionage, armed with the latest high-tech equipment. Their recruits tend to come from further afield than TRAT members, with a focus on self-reliance and autonomy.