I have to admit that i've cried a little bit at the end... the documentary is concise and short but very well structured. Show us the process that a person goes by to become a marine in a very concise way and explain the various types of situations they could pass in the future. Make us think: "would I be able to get through this?" or "if it was me..." and this makes us admire these people and thank them for passing through it. I cried at the end of the documentary when they reunited with their families. 10/10!