Airman Basic

Airman Basic (AB) is the lowest enlisted rank in the UNSC Air Force, immediately below Airman. The pay grade for Airman Basic is E-1.

As opposed to all other UNSCAF enlisted and officer ranks, Airman Basic has no rank insignia affiliated. The lack of uniform insignia for Airmen Basic is the impetus for the nickname "slick-sleeve", in contrast to all other enlisted Air Force ranks which wear their stripes/chevrons on their uniform sleeves.

The term of address for an Airman Basic is "Airman Basic" or "Airman".