The world as you know it is built of many different agencies and organizaitons. The people in those groups are not your average man or woman. They are specially trained to deal with any problem. The alphabet agencies all hire from within their countries or turn agents from other companies but do not let the turned agents have any access to secure information or areas. The Private agencies hire from any source they can usually in bulk.
The agency you belong to is the Longfellow Group. The group is designed to deal with exchanging information with other agencies. If the FBI needs to get a hold of a specific file in the KGB archives, they can either ask for it (giving away what they are doing), ask one of their allies to get it, (exposing said ally to any number of potential problems), or hire one of the agencies like the Longfellow Group to secure the information. The Longfellow Group has world wide contacts and tends to copy any file it comes across for later use. The Longfellow Group has archives in secure locations across the world. In places that do not have names.