I will buy DOW every 5-10% drop pending on volume. Frankly I do not know where is bottom for DOW either. However, because I hold 80% cash, I am not concerning too much if it continue dropping. Let's remember what Buffet said how to invest in crisis:
1. "Cash combined with courage in a crisis is priceless"
2. "Dont invest in things you don't understand"
3. "Don't try to catch a falling knife until you have a handle on the risk"