Flash Crash Threatens to Return With a Vengeance 0 Bob Dillon World NewsDecember 2011Saturday, December 31, 2011 at 9:30 am PST • Views: 861 cnbc.com More … 600-point Down-spike Commodity Markets Equity Markets European Markets Eurozone Drama Flash Crash Investors Risks Markets Trillion-dollar Write-off Systems Failure Shuttle Disaster True Nightmare Scenario Mini Flash Crashes 600-point Down-spike