It was devastating as it's unusual for an adult animal to succumb to them, but it does happen and this year they are particularly bad.
I noticed she looked a bit off colour on Thursday afternoon and thought I'd check in the morning, but next morning couldn't find her. By the time I did she'd been down probably most of the night and I couldn't get her up on her brisket. By the time I raced back to the house to get rope (DH was in town) when I got back no more than 5 mins, she was dead.
I've heard of someone who lost a fully grown bull this year and someone else said they knew someone who lost two cows and a friend lost a calf. All went fast within 24 hours which is not the norm, you usually have more time than a few hours before they're dead.

Vicki