Shadowplay.

A stressful and in the end very satisfying day. We had to fit five 85kg glazing units into openings on the finished slated roof. One of them required us carrying it flat with suckers up two 30foot ladders, one either side of the window. It was nerve wracking and potentially very dangerous, if a sucker unstuck or one of us slipped; you get the picture.
With judicious use of all the Ps (prior planning and preparation prevents piss poor performance) the days toil went without incident.
And it was sunny.