Kathryn Rowe, Quinn Smith take home 200 IM titles for Schenectady Saratoga.
Townsend was one of 21 people to become naturalized citizens in a ceremony in Phoenix today.
Madelyn Murphy, Sidney Cooke and Forrest White push Crow Canyon into lead.
Miller adds 400 IM victory to win in 800 free on night one.
Ohio State sweeps team titles with seven victories on final night of racing.
Though the Australians were expected to win the 400 free relay, the world record changes the landscape of the Pan Pacific championships.
Townsend was part of South Africa's 400 free relay in the 2004 Olympics that won gold and set a world record.
Darian Townsend sworn in as a U.S. citizen today and will make an immediate impact on the USA Swimming landscape.
Scotland had a stellar night, but Australia capped the evening with a historic swim.
Men's 50 back also features some top-end speed.