Futures Slip on Durable Goods, Debt Worries By: CNBC.com News July 27, 2011 at 09:12 AM EDT Stocks opened lower Wednesday following an unexpected drop in durable goods orders and as ongoing worries over a possible U.S. debt default weighed on sentiment. Read More >> Related Stocks: 3M Co Aetna Amazon.com Boeing Co Dow Chemical Juniper Networks