Nola Rivaldi, 7, pops out of the water after practicing a dive during a springboard diving class, Feb. 12, 2014 at the Marine Corps Base Hawaii pool. The class is available to children ages 7 to 13. (U.S. Marine Corps photo by Cpl. Sarah Dietz) - Nola Rivaldi, 7, pops out of the water after practicing a dive during a springboard diving class, Feb. 12, 2014 at the Marine Corps Base Hawaii pool. The class is available to children ages 7 to 13. (U.S. Marine Corps photo by Cpl. Sarah Dietz)

MARINE CORPS BASE HAWAII - Participants push themselves during the Ab Express class at the Semper Fit Center on Marine Corps Base Hawaii, May 23. There are a variety of exercises, working the participant’s entire core, back, legs and also helping their balance.(U.S. Marine Corps photo by Lance Cpl. Janelle Y. Chapman) - MARINE CORPS BASE HAWAII - Participants push themselves during the Ab Express class at the Semper Fit Center on Marine Corps Base Hawaii, May 23. There are a variety of exercises, working the participant’s entire core, back, legs and also helping their balance.(U.S. Marine Corps photo by Lance Cpl. Janelle Y. Chapman)