Answer:
If you spot one of these eastern warriors, they're not doing their job right.
What flies forever, Rests never?
What is neither inside the house nor outside the house but a necessity for any home?
Until I am measured I am not known, Yet how you miss me when I have flown.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?