Guest Stars Dennis Chun as Sergeant Duke Lukela Teilor Grubbs as Grace Williams Al Harrington as Mamo Kahike Autumn Reeser as Dr. Gabrielle Asano Patrick Fabian as Tony Dennison Erin Cardillo as Megan Koruba Kimee Balmilero as Allison Richard Portnow as Ron Sheridan Leroy Kalama Fallau as Hawaiian Warrior #1 Apolo Ohno as Seth Burgess Christine Ka'aloa as Assistant Jessica Hoffman as Chelsea Jon "Kiko" Kiko as Hawaiian Warrior #2 Kaiwi Lyman-Mersereau as Kevin Creed Shane Victorino as Shaun