BTW - a month or two earlier, GE-Lynn (MA) had their open house, and in the test cell area a J85 was running. It was apparently on an endurance test program, and they let the kids in the crowd sit at the throttle and exercise the hell out of it.
At Pratt, when I wandered into the test cells, there was a loud noise of an engine running. I kept looking for the action, but when I reached the apparent source of the noise, two test cells were open with visitors walking in and out to see static engines. But what of the noise??
Finally I looked up in the overhead - and saw an array of very large loudspeakers...