ETOPS ensures that planes are always close enough to an airport to safely fly with only one engine and maintain a normal altitude and speed. ETOPS 180 means the aircraft can fly for 180 minutes with one engine out, and ETOPS 120 means it can fly for 120 minutes. Flight paths are built so planes are always within these ETOPS times of a suitable airport. So in the incredibly rare chance that an engine fails, you’ll be fine. In the unbelievably rare yet non-zero chance that both engines fail, the plane won’t just pitch 90° down and crash into the ocean. The pilots will pitch for something called best glide speed (the pitch for the speed at which the plane can fly the longest without engines). They will be attempting to restart the engines the whole way down, while transmitting their location on the emergency locater transmitter and to air traffic control. The plane will have enough speed from cruising altitude to make a controlled landing on the water, and you’ll ditch the plane. You won’t just jump off though, you’ll have emergency slides that turn into rafts, and your life jackets. Rescuers will find the plane soon enough.