The mark consists of an inner circle divided through the middle with a vertical dividing line, with the right half of the circle colored dark blue and the left half of the circle colored medium blue; the letter "N" in a stylized font in the color white inside the inner circle; a broken circle comprised of four curved dark blue segments surrounds the inner circle, and an arrow shape extends upwardly from just above the top of the inner circle, the arrow shape being half medium blue and half dark blue; the letters "NTA" in a large dark blue font are disposed to the right of the N-circle design, with the word "INCORPORATED" in smaller dark blue font below the "NTA".