I flew many times in the Navy, commercial hops not military, my most favorite part was when we arrived and the door was opened to get out!
Had one in flight incident where we ran into a downdraft and dropped 2,000 feet in seconds from a 30,000 feet cruising altitude, my stomach was literally in my throat and I almost tore the armrests off the seat!
(That is no joke!)
The captain come over the squawk box and informed us we had hit an air pocket, had dropped 2,000 feet and we would be climbing back up to our cruising altitude of 30,000 feet.
The stewardess was attempting to calm me down, I had made many flights and never experienced something like that!
I said, "Didn't you hear what the captain said, he said we dropped 2,000 feet?"
She told me not to worry it was a common thing that happens all the time!
I had a death grip on the seat arm rests!
Don't Worry, we have plenty of altitude?
I said, "Yeah, But what if we were at 2,000 feet!"
(True Story)