- Divers probably will be used to recover bodies, an expert says
- Hospitals in the Indonesian city of Surabaya are being prepped to help identify bodies
- The plane took off two hours early. Expert asks: "Were they trying to beat the weather?"
(CNN)The discovery of debris from AirAsia Flight QZ8501 means investigators have taken a big step toward answering the questions haunting the families of those aboard the doomed plane. What are the key questions, and what might come next?