The Thin Red Line. The Thin Blue Line. Together these symbols of our great police and firefighters combine to create a striking and bold flag; perfect for offering your support to all of our public heroes. With the American flag as a canvas for this bold design, it is empowering to display the red, white, and blue colors in a new way that shows what your defenders mean to you. The Thin Line will always stand as strong and united as the country they protect.