That 757 flyby reminded me when Boing introduced it in the early eighties. I was then working for the domestic airlines in Sweden and Boing was on a promotional tour with the 757. They did a similar flyby over the cityairport in Stockholm were Scandinavian Airlines had its headoffice then. We were standing on top of a catering truck that we had lifted to maximum height. A few seconds after the flyby we were almost thrown of the roof of the truck when the gusts came after the plane. We were about 30 ft above the ground,that fall would have hurt.
Here is a video of a Swedish Airforce pilot who got fired recently for this. The Airforce headboss saw it on youtube too. Quite a low flyby, brave guys onn the ground.
https://www.youtube.com/watch?v=NzLboh1FC8Y
Jan