Twice.
Once for a chimney fire, on Christmas Eve...DW decided she didn't like the sight of the kindling wood I had brought home to light our fireplace and stuck it all in to the fireplace, while it was already burning...a whole box full of it. I was in another room. Soon a passerby noticed flames coming out of our chimney. I got the kids and wife and MIL out of the house, called 911, used a fireplace fire extinguishing device, followed by a regular fire extinguisher, and by the time the fire dept was there, the whole thing was over. They did check to see that the chimney was not on fire. I had a chimney sweep guy come out a week later to check for damage...there was none. But thanks to that passerby we are all alive.
Second time was July 31 last year. DW and I had gone to bed 15 minutes earlier, and I was in that "barely drifted to sleep" phase. I heard a deep guttural scream/groan come from DW, then gasping. I turned the light on, and tried to get her to respond. She was twitching and convulsing, which lasted maybe a minute, but she could not respond. She can be a bit of an exaggerator, so I threaten to call 911 if she did not respond, and she did not, so I called 911. Turns out, she had experienced a seizure of the tonic clonic variety, what used to be called grand mal. She started coming around after the ambulance got there, but was still in that fuguelike state...she didn't know who I was or where she was, or what was happening. At the time, I thought she might be having a stroke...it runs in her family. Anyway the ambulance took her. I put the dogs out in the yard, and grabbed a bottle of water because I was in such a horrible mental/emotional state that my mouth was completely void of saliva, and took off for the hospital. I followed the speed limit to the letter...not wanting to be pulled over on the way to the hospital, but still I arrived there 10-15 minutes before the ambulance. Note that on the way I had called our religious leader, just in case, who showed up at the hospital right after I did. We've always wondered why it took them so long to get to the hospital...did they stop for coffee along the way? Take the long way? Who knows.
DW went on to suffer 4 more seizures after that...once she had two during the same night. But I'd been educated by then by her neurologist on what to do and when 911 would be necessary. She is on Keppra now, an anti-epilepsy drug, along with preventative Ativan when she get the precursor headache that seems to affect her. She is now 5.5 months seizure free, and we are hoping her doc will clear her for driving again soon. Long story for a simple question, but this episode literally scared the H3LL of me. Good thing I'm retired, or I would have had to retire. Doc required that someone be with her 24/7 for the first months after, because it was not controlled and a reason was not pinpointed. We now think we know the reason (cavernoma) and it seems to be controlled.