Dow Jones Industrial Average index traded close to flat on Friday as investors remained cautious about developments in Iran and awaited February employment report. Blue chip index edged down 0.02% or 2.73 points at 12,977.57 with 15 of 30 shares posting loss. American Express and IBM provided main downside contribution slipping 1% and 0.8% respectively. On the positive territory AT&T added 0.8% and IBM gained 0.7%.