Top Secret Clearance
This type of security clearance provides access to information or material that may cause "exceptionally grave damage" to national security if it was released without authorization.
For example: Unauthorized release of top secret information could include compromising vital national defense plans, complex cryptology and communications intelligence systems; revealing sensitive intelligence operations; and disclosing scientific or technological developments vital to national security.
Those who obtain a Top Secret Clearance have duties that demand the highest degree of public trust.
An investigation for a Top Secret Clearance is more thorough and reviews the last seven to 10 years of your life. The Top Secret Clearance requires a Single Scope Background Information (SSBI), which involves interviews with friends and family. The Top Secret Clearance must be renewed every five years.