I've only been in a scary situation a few times, and only had to react MYSELF once.
My mom was getting ready for work one morning, (when Tyler and I still lived with her, and all of a sudden she starts screaming for me to call 911. I ran in her room and her nose is just spouting blood. Apparently she had a nosebleed that would NOT stop, and they wound up having to cauterize (sp?) the inside of her nose at the hospital later on. So I clamly called 911, and since we lived about 30 seconds (literally) from the fire station, they were there right away. One of the EMT's was a friend of mine from high school, and he and his partner took care of my mom, and loaded her in the ambulance while I packed up Tyler to follow them in my car. Scary when you have to help your parents.
The second time, was right after Adam and I had started dating. We were at his aunt & uncle's house, and everyone was in the living room watching TV. Tyler wanted a drink, so we went into the kitchen, and chilled there for a while. He had just put a lifesaver in his mouth about a minute earlier, and ca,e around the corner of the island in the kitchen, trying to scare me. He did scare me, and I jumped, which kinda scared him (he was only 2 at the time), and he accidentally sucked the lifesaver back into his throat. He started gasping right away, and I panicked. I have never (and yes, I'm a bad mommy because of it) really attempted learning infant and child CPR, so my first reaction without thinking was to call for Adam. He later said he could hear the panic in my voice when I yelled for him. He came in and basically saved the day. Tyler spit the lifesaver onto Adam's shirt (along with some puke too....welcome to fatherhood!!), and all I really remember after that was grabbing Tyler and sobbing with relief....I don't think I let go of him for a good hour.
The EXACT same thing happened with my grand... her nose was bleeding uncontrollably. They also had to burn the inside to stop the bleeding. They said ifit ever happens again that could be IT (cause lossing blood so quickly).
That's scary.....ugh....not fun. :(