This was by far the scariest and most real situation that I was placed in so far as a journalist. I was out feature hunting and found a man digging in his garden. After about 5 minutes with him without any warning or signs he collapsed to the ground due to a heart attack. While waiting for the paramedics to show up I felt completly helpless while he was laying on the ground, there was nothing I could for him except wait for help. However he is fine now, and put life into a different perspective for me.