@mixture. Aah, the 'official' t w a t t e r, now it makes sense. Thank you.
@zz9.
But I would imagine that their criteria is different to most traffic. Seeing the ground is what they do, so they may well have grounded themselves far sooner than called for for purely safety reasons.
Kind of my point, whether they patrol or respond they need good vis to do their job, not necessarily to fly. So their operational needs, and possibly SOPs will be different to that of other 'civil' operators.
In short a poor comparison.