He worked as a rear gunner in a fighter plane.

He entered the forest with a shotgun.

He received training to handle a heavy machine gun.

He is good at handling a light machine gun.

They are always together like the Three Musketeers at school.

We should always remember the power of Kannon in difficult times.

He boarded the fighter plane as a tail gunner.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.