Vanessa Hua January 7, 2021Updated: January 7, 2021, 8:51 am Sydney Tumilty, 8, prepares to jump into the pool during swim camp at Soda Aquatic Center at Campolindo High School in Moraga on July 2, 2020. Photo: Gabrielle Lurie, The Chronicle 2020 “What’s that sound?” my family asked on both Christmas Eve and New Year’s Eve as insistent beeps blared from my office. “The swim alarm!” I said, before bolting from the dinner table and racing to my computer. In pre-pandemic times, such interruptions would have been considered rude, but my family has grown used to my desperation. If I didn’t log on and reserve a spot then, I’d miss my chance to swim in the week to come.