Wall St. falls for first time in three days

The blue-chip index came within 19 points of the milestone shortly after the open, before slipping into negative territory as losses in Boeing offset Goldman Sach's 0.86 percent gain. Boeing fell 0.8 percent to $156.26 after Delta Air Lines said on Tuesday that it had reached an agreement with the planemaker to cancel a $4 billion order for 18 Dreamliner aircrafts. U.S. equities have been riding a post-election rally, feeding on optimism that Donald Trump's policies would be business friendly, e