Two years after September 11, despite the various high-profile efforts of the war on terrorism, 76% of Americans say that over the last two years they have not come to feel safer from the threat of terrorism, according to a new PIPA/Knowledge Networks poll of 1,217 Americans, conducted August 26 through September 3. A repeat of a trendline question asked regularly over the last two years also found no reduction in concern about the possibility of terrorist attacks against the US.