There have been more than one report on these forums of people who resigned a job only to learn that the former employer told a security investigator that they had been terminated. I have personal knowledge of at least one person whose former employer actually filed a security violation against them after they left. What is an applicant supposed to say about this? I suppose if they can show that they left Company A on a Friday and started with Company B the following Monday that would go a long way toward strengthening their case.