The Whop-Whop-Whopping of Several Blades Slapping – May 8, 2021

On a cloudy day, the whop-whop-whopping of a helicopter could be heard along the shoreline of Stonington Borough, Connecticut. The sound, referred to as blade slapping by aeronautical experts, caught the attention of the WORD’sMarlena Freitas. Pictures © Copyright 2021 Marlena Freitas