Dollar Cost Averaging in a Volatile Stock Market

Need help on story on the pros and cons of dollar cost averaging in a declining stock market (like the first week of February’s market.) Is DCA a good move in this market? Why or why not? With extra volatility, what other moves can investors make to take full advantage of market conditions? All comments welcome. Requirements: Dollars Cost Averaging experts, stock market experts, portfolio management experts, money managers, actual DCA investors.