Answer:
Every country has one, though we are not the same. Waving to our citizens, throughout the wind and rain. What is it?
They are the group who manages the winged engines of war.
If you are unsure how to use one then just ask a flight attendant.
A king wears one on his head.
Proof you've done your time in school
I am your mother's brother's only brother in law. Who am I?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?