 About 100 people drown from rip currents along U.S. beaches each year. That's according to the U.S. Life Saving Association. And more than 80% of beach rescues annually involve rip currents. John Scott reporting. With summer having gotten off to a scorching start, workers across the country may be dreaming of a seaside escape or cutting out early to watch a movie in an air-conditioned theater. For some, that can be a reality. Summer hours, a reduced schedule on Fridays offered usually between Memorial Day and Labor Day,