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..
Enlisted Air Force ranks are broken down into three levels: Airmen (E-1 through E-4), Non-Commissioned Officers (E-5 and E-6), and Senior Non-Commissioned Officers (E-7 through E-9). The Air Force is the only one of the five branches of the U.S. military where NCO status is achieved at the grade of E-5.
While all Air Force military personnel are referred to as Airmen, it can specifically refer to the pay grades of E-1 through E-4 which are below the level of non-commissioned officers (NCOs).he impetus behind this was to laterally promote senior E-4 airmen who were ready for NCO responsibilities but not prepared to take on the role of a Staff Sergeant. This permitted airmen who had not yet reached the AFSC 5-skill level to achieve the pay grade of E-4, while according those who had NCO status.