I'm tempted to say "can you see what it is yet?" but Rolf is rather persona non grata these days...
Sentinel ZJ691 - it traced the octagon round East Anglia three times (apart from the blip towards Brum) - probably could have seen it as turned east over my head each time, now retracing the northern sector of its task and will presumably be back at Waddington in time for tea and scones...
