And that is the significance of the potential impact that could arise from a US government shutdown this week. In fact, BofA estimates that any major shutdown would only subtract 0.1% from economic growth for every week it lasted. So, why is the operational disruption a key risk event for markets then? The thing is if we do get a shutdown on 1 October, that will delay the key economic releases that we will be getting this week. So, that's the key risk in scrutinising the US government shutdown that could happen this time around.