WASHINGTON – PRESIDENT Barack Obama hinted at the lethal force he will bring to bear on intruders who float past his security detail when he squashed a fly during an interview at the White House. Midway through answering a question during an interview filmed on Tuesday with financial news network CNBC, the commander-in-chief found himself the focus of a particularly pesky critter buzzing around his head. ‘Hey, get out of here!’ he said, cutting short an answer about the US