Nightmare #4

I was walking on a huge frozen pond.  In front of me a man was walking followed by two women.  I saw in the distance that the shore was not frozen and I was afraid that the ice wasn't safe.  I turned back the way I'd come to the land.  The others kept going and each in turn fell through the ice.  There was a brief time when I knew that they were alive in the freezing water and I couldn't help them.  Only the man screamed and then it was silent.  I knew they were all dead.  It was horrible to think about even in the dream.  That these 3 people had just died and I was a witness and bystander completely unable to help.