I performed an experiment and here is my data.

My fiance was complaining none of her items were shipping, even with Prime.

I logged on my account which I rarely use and DOES NOT HAVE PRIME and I ordered some gloves, a plate carrier, a pistol sheath and a knife, all black in color. Within a half hour I was receiving notifications that all my items had shipped. Most arrived by the end of the week. My plate carrier made it from China to the US very quickly, I guarantee you they air mailed it. It cleared customs in under 1 minute according to tracking.

Its amazing how quickly amazon can ship out riot gear, but they cannot ship priority customers essential items.