A military hardware firm put me through the process for a Top Secret desk job and by they had me a level where I could enter the building where the airplane was kept at an air base, it was 8 months later. I had long since found another nice job, so I pulled out. In that time I also talked to other engineers who had done those jobs and the picture I got was that a Secret or TS is not worth having from a gain standpoint. They are for military people and those civilians who want to work at military bases.