It sounds like a hornet
The flying insect you are describing is most likely a Western Cicada Killer wasp (Sphecius grandis) native to California. It is a large, solitary wasp that preys on cicadas and is known for its distinctive yellow and black striped body, transparent wings, and long antennae. These insects are not aggressive towards humans, as their main focus is on hunting cicadas for their young.
From one and a half inches to two inches depending on size.
I believe 28 inches
62 inches
17 Inches
3 inches
ghosted
a full grown flying squirrel is about 6 inches with arms fully extended
they look about 5 inches and3 inches wide and are a little darker blue and is white but has blue spots.
they get up to 7 to 12 inches
4 inches
It varies from state to state. Here in NC, it is 16 inches.