For this particular company, they were looking to display a patriotic color scheme, yet maintaining a professional brand.  It was descided that all advertising material would be in red, white, and blue, with business cards taking on a basic, professional theme.  The uniforms and truck equipment decals is what you see when this company is working out in public, showing off a patriotic attitude.  The business card is when the owner is working strictly business, which is why it was designed with neutral color tones, a basic San Serif font, and a simple design.