An interim clearance allows a person to have access to collateral classified information (at the level requested without a caveat) while his or her final clearance is being processed. For example, a person with an Interim Secret may have access to a document marked Secret, but not a caveated one, Secret COMSEC..
Air Force Senior Non-Commissioned Officer (SNCO) Ranks. (E-7 through E-9) Air Force enlisted members E-7 and above are referred to as SNCOs. Air Force SNCOs are expected to set the highest standards of personal integrity, loyalty, leadership, dedication, and devotion to duty including upholding Air Force policies, traditions, and standards.
A non-commissioned officer (NCO) is an enlisted member of the armed forces holding a position of some degree of authority who has (usually) obtained it by advancement from within the non-commissioned ranks.