Answer:
I'm a ring of sliced onion dipped in batter and then deep fried.
An appropriately loud response to fear, excitement, or your team scoring.
Most people need it, some ask for it, some give it, but almost nobody takes it. What is it?
Low on cash? Pick out items from this rack.
They are the group who manages the winged engines of war.
I am a room that has a roof but no walls. What am I?