Well this wasn't an easy topic to do reseach on.Well,you could tell that because of the name "Secret Service." National Geogrphics was allowed access to a alot of interesting things.The secret service has always facinated me.There whole operation are here in full detail.How they perpare a sight weeks in advance for the president.It shows all the assassinations and assassination attempts that were caught on camera.I really like the pace of this documentary.