As we get older, our brain needs some exercise to keep it healthy so I have one Riddle and one question to stir that grey matter awake
Riddle + I Fly, yet I have no wings
I cry, yet I have no eyes
Darkness follows Loer me
Lower light I never see
I am
Question= One Post Office is not required to fly the American Flag
What City and why

No cheating , we all can google it but ask around someone will get it
have fun, good luck