Sure, we can start with those almost silly scenes from Bond movies and other spy thrillers where the hero is guided through a large room where all sorts of devices and dirty tricks are being tested out for future use. These are caricatures of similar activities which occur on a daily basis in the schools for CIA and FBI agents, as well as others.
Though little discussed, you can be sure that somewhere in the federal government, somewhere in the intelligence apparatus, there is some program, some deeply compartmentalized management team specifically for training assassins. That is the stuff of The Bourne Identity. It is fiction drawn from reality. However, is this the right way to thing about this?