Moreover, you don't need to go as far as 1999. Actually the turmoil of past august (just one month ago) was preceded and followed through a gorgeous, disgusting spike in volatility (VIX).
Too bad... the market was behaving sooooo good lately . The next days will say...
In the worst case (Volatility revival), it will be a good opportunity for coming back to day-trading.
This is 1 day! Days like this were the norm back in 1998-2002. Everyone is so geared towards low volatility that when the volatility actually gets back to normal, everyone gets scared. This is nothing folks.