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On a disc parted palewise by a bar Or, Azure and Vert, overall a twin rooked castle Gules, its slots of the first, bricking exploding three dimensionally six to dexter and four to sinister from an embowed armored arm and gauntlet Proper extending upwards to chief grasping a sledge hammer Yellow, all detailed and shadowed Sable, all within a narrow border Black.

Attached above the disc, a Silver scroll edged with a narrow Black border and inscribed "BUILD STRONG" in Black letters.

Attached below the disc, a Silver scroll edged with a narrow Black border and inscribed "502D CIVIL ENGINEER SQ" in Black letters.


Ultramarine blue and Air Force yellow are the Air Force colors. Blue alludes to the sky, the primary theater of Air Force operations. Yellow refers to the sun and the excellence required of Air Force personnel. The divided disc represents the earth and the sky. The castle is a historic symbol for engineering, and the red represents military strength. The embowed armored arm signifies the leadership role of the unit in executing its installation engineering mission. The steel of the armor symbolizes service and the commitment to put the needs of the Air Force above the individual. The hammer represents honor and integrity, an everyday showing that our word is our bond. The combination of yellow and the hammer honors the lineage of the unit, originally activated in 1979 at Maxwell Air Force Base, Alabama.

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