Thank you the informative information and instructions. It's more clear and detail than the leader's teaching in military. Protect our homeland is our responsibilities. Imaging that there are some bad guys invaded into your house, what will you do? Of course call police, but they are already breaking into your house, how soon the police can come to help you and your love ones (wife, children and parents)? Self-defense is very important and need to teach everyone having the concept. Thank you J 爸 and 魏先生 👍