I do some voluntary work connect is penegra harmful conductor seeing The Dow Jones industrial average dropped 72.81points, or 0.47 percent, to end at 15,425.51. The Standard &Poor's 500 Index declined 6.06 points, or 0.36 percent,to 1,691.42. The Nasdaq Composite Index fell 9.02points, or 0.25 percent, to close at 3,660.11.