In 2007, for the Air Force 1s 25th anniversary, Nike Basketball designer Tracy Teague was given a seemingly impossible assignment - re-create the Air Force 1 for the modern player. The result was the Air Force 25, a shoe that bore a familial resemblance, but utilized all of Nike's modern technology. One of the less performance-oriented improvements they made was finding a way to make white whiter. The "color" was called 10a.