As the passengers on US Airways Flight 1549 returned home today, investigators kicked off their probe to find out what exactly caused the plane to go down. Their first obstacle: the engines are missing. Both engines of the plane seem to have separated as the Airbus A320 was towed to shore. Investigators at the Nation Transportation safety Board hope to find them in order to confirm that the geese that hit the engines were the only cause of the crash. A giant crane and a barge were brought in this afternoon to remove the plane from the water without breaking it into pieces—a difficult task. The NTSB is also set to meet with the flight's pilot Capt. Chesley B. Sullenberger III today in order to learn more about the events leading to the crash. Sullenberger has been praised as a hero and today Mayor Michael Bloomberg said he would offer to give him a key to the city.