(Definition of âditchâ from the Cambridge Advanced Learner's Dictionary & Thesaurus Â© Cambridge University Press) See all translations. us â /dÉªtÊ/. âº a long, narrow, open channel dug in the ground, usually at the side of a road or field, used esp. for supplying or removing water.
For a secret clearance in a national security position, the investigation requires agents to interview people who have lived or worked with the candidate at some point in the last seven (or more) years. There are four main types of security clearances for national security positions. These are confidential, secret, top secret (TS), and sensitive compartmented information (SCI).
A security clearance is a government authorization for you to view classified information as your job requires. The information can be as varied as reports about border security or details on how spy satellites work. A clearance is not a blanket authorization to view all classified information; it simply allows you to view the information you need to know to do your job.