The crossed arrows, whose ends are visible near the bottom of the shield, symbolize nonaggression, but imply readiness against attack. The laurel branches, taken from Greek tradition, symbolize victory. In heraldic engraving, vertical lines represent red, clear areas white and horizontal lines blue, thus the escutcheon is colored red, white and blue and is meant to evoke the American flag. Bowers does not consider the reverse design an artistic work, but one which is purely mechanical, obtained by punching characters and devices into a steel hub.