1. The cost rise is one thing that can derail this story.

2. Many things can still happen that can potentially derail this effort.

3. I am also surprised that it should derail the process.

4. Without openness and respect, problems and mistakes will derail a sprint.

5. Getting off to a bad start, he said, can derail a critical presentation.

6. It could also derail the deal.

7. Either option would derail the deal, the memo suggested.