Background Trimming (Oval) Description
Centered within an oval shaped embroidered item ultramarine blue with a 1/8 inch (.32 cm) golden orange border 1 3/8 inches (3.49 cm) in height and 2 1/4 inches (5.72 cm) in width another oval shape with a 1/32 inch (.08 cm) border 1 1/2 inches (3.81 cm) wide by 3/4 inch (1.91 cm) high having a golden orange lightning flash running from right to lower left point downward.

History
The background trimming was approved on 17 November 2003.

Source: The US Army Institute of Heraldry