Anything with an afterburner is loud. When you're converting fuel to noise at a rate of gallons per second, it creates a fuss.
Nothing like rockets, though. They burn fuel at a rate of tons per second. Really.
Hard to see from the pics if the burners are selected. In the video (2nd) they clearly are not. When they go to burner, the "feathers" in the aft end spread open like your pupil does. BTW, the loudest of the all was Pug's jet, the Prowler. Mine just sounded like a vacuum cleaner
