Project Manager will contact you. Have a talk to the manager. That is all. The rest will be interview question. But be warn, after success in interview and joining this internship, you need to have a full dedication, do not slack off. Do your very best in research and presenting weekly report progress. Do not be shy to ask or repeat. They are not going to eat you or anything. Be daring, even if you forget something, be very daring. You are working and contributing alongside with the Government. Consider that as a government job. Be proud of it