With the U.S. government shutdown in effect, the market's initial reaction has been relatively calm says Kevin Green, but that could change if the stalemate continues. The 10-year yield is currently flat, and the dollar is holding steady, but a prolonged shutdown could lead to a sell-off in equities and a flight to safety in Treasuries. KG notes that the ADP jobs report will take on added importance in the absence of the non-farm payrolls data, which was scheduled for Friday. For today's session, KG's S&P 500 (SPX) targets for the day are 6675 to the upside and 6600 to the downside, with a focus on defensive sectors like utilities, consumer staples, and healthcare.