U.S. Marine Sgt. Olivia McDonald, a mass communicator with II Marine Expeditionary Force, signs a child’s hand at Carenage Boy Government Primary School as part of a community relations event during Phase II of Exercise Tradewinds 2017 in Chaguaramas, Trinidad and Tobago, June 16, 2017. This year marks the 33rd iteration of the regionally focused, multi-nationally planned exercise, which dates back to 1984. McDonald, a Medford, Massachusetts, native, and other Marines are providing training and logistical support for the exercise. (U.S. Marine Corps photo by Sgt. Clemente C. Garcia)