Coach Hart retired in 2005 and was was known as one of the world's past 400m coaches. He was 90.
Best known athlete was of course, Michael Johnson but one won three straight Olympic 400m titles with the addition of Jeremy Wariner after Johnson retired. Darold Williamson One gold in the 4x4 with Wariner 2004.
Sanya Richards won gold in London in London 2012, Greg Haughton won a bronze for Jamaica in 2000.

