Clarification? If you want to terrify the FAA, just use the word battery and safety in the same sentence. People use electricity every day, but they are afraid of it and don’t really understand it. Burning fuel has its problems too but people don’t have an abhorrent fear of it. The best solution is using both. A backup is easy to understand. By using a gas powered system to generate electricity, it will satisfy the safety concerns, greatly extend flight time and keep investors happy.