Massive storm sweeps over area, work is halted until clearing of...

Massive storm sweeps over area, work is halted until clearing of debris, SES and Army are assisting council workers. How's a scenario like that?
Earthquake has caused damage to underground work, how's a scenario like that?
Try thinking about different aspects like these , there are others, so when you think about self imposed deadlines they could be ahead of schedule or behind, so a few days or even a week is neither here nor there.
Your last line miningmad sums it up well.