Two off-duty firefighters sprang into action to rescue a five-year-old boy who fell into a pool at a resort in Lauderdale-by-the-Sea, deputies said. According to the Broward Sheriff’s Office, deputies on Sunday afternoon received reports of a possible drowning at the Plunge Resort Deputies and Pompano Beach Fire Rescue then arrived at the resort, where they learned that two off-duty firefighters, one from Broward Sheriff Fire Rescue and Miami-Da…