iShares Dow Jones Transportation Average Index Fund ( IYT) -1.6% The transportation ETF is facing pressure, with the airlines leading the retreat. United Continental ( UAL) is taking one of the biggest hits, declining 7% in early afternoon trading. Delta ( DAL), AMR ( AMR) and JetBlue ( JBLU) are all facing declines as well. IYT is well suited to protect against volatile regions of the transportation industry such as airlines. The industry represents only 6% of the fund's index. All prices as of 2:14 PM EST Written by Don Dion in Williamstown, Mass.