DS got an LOA from USNA. Waiver deined. He had long QT (arrhythmia) diagnosis with QTc interval of 460 (520 after treadmill test). He is heart-broken as it was his dream. I do not see posts on long QT on the forum. I thought it may help someone of similar condition. He has no symptoms/problems. He participated in competitive swimming regularly. Obviosuly every case is different but better to be prepared.