In the fires in Arizona last summer some neighborhoods in northern Arizona had to be evacuated for a day or two and even in that short period of time there was some looting.

FORBES: Crime in the Wake of Hurricane Irene

Regardless of whether the entire amount was invested on that day or invested over a period of time, the portfolio rose in value if dividends were reinvested. (I intend to publish the study, which compares dollar cost averaging to lump-sum investing in the April AAII Journal).

FORBES: Invest Now Or Wait?