As I am sure you are aware SSI stands for SENSITIVE Security Information and in no way is either confidential, secret or top secret, any of which would indeed compromise national security. This poorly redacted document was the standard operating procedure for a member of TSA management and in no way disclosed the SOP for screeners. This leaves the SOP for screeners still in the uncompromised state it was in prior to the discovery of the poorly redacted SOP for TSA supervisors.

The SSI designation for TSA documents skirted the requirements for classified documentation. It also allowed people who would not normally qualify for a security clearance to have daily access to the SSI documents in order to do their jobs. The SSI label required no stringent background investigation as would normally be the case to access classified documents. The SSI label, while being approved by Congress, bypasses the measures normal classified document requirements.

Something like that?