"I don't know why or when or how. It was just a glimpse. Maybe fifteen minutes in time? I'm not even sure how far into the future it was."
The further into the future it was, the more difficult it would be to pinpoint the chain of events that had led to that point and try to avoid them. Then again, if anyone from die Festung had seen glimpses of a similar future, the events might already be set in motion. Now that would be a kicker, wouldn't it? Glimpsing a potential future war ending up the basis for said war.