MARINE CORPS BASE HAWAII - An SH-60B helicopter belonging to Helicopter Anti-Submarine Squadron Light 37 performs a landing. The unit recently celebrated a milestone of surpassing 100,000 flight hours. (Photo courtesy of HSL-37) - MARINE CORPS BASE HAWAII - An SH-60B helicopter belonging to Helicopter Anti-Submarine Squadron Light 37 performs a landing. The unit recently celebrated a milestone of surpassing 100,000 flight hours. (Photo courtesy of HSL-37)