CNN  —  Water was already up to his knees, but 22-year-old Kierwen Garlan’s first thought was how to help his neighbors, as their homes were filling with floodwater and being lashed by heavy rain. Tropical Storm Trami, known locally as Kristine, swept across the northeastern Philippines last week, inundating entire towns with severe flooding and triggering deadly landslides in what was the deadliest and most destructive storm to hit the archipelago so far this year. The Philippines is struck by