As Hurricane Irma blasted up the corridor over the Lesser Antilles, and barreled down on Puerto Rico, most flights for San Juan were either turning around or cancelled before takeoff. Not Delta Flight 431. It took off from JFK as scheduled and headed into the path of the storm in a race against a true force of Nature: Hurricane Irma. It wasn’t just that the passengers on board needed to get to the island, but those waiting in San Juan wanted desperately to evacuate. Here's the story of the exciting and successful journey.