The one that comes to mind is when a 96 year old neighbor tripped and fell backward. I stepped forward and caught her in my arms. It must have only taken a second but it seemed like I had all the time in the world to reach her and save her from hitting the ground. I didn't think anything while it was happening and it was so seamless that it was like nothing happened. But I do know that a fall for someone that age could have been tragic.