A false smoke alarm at Jane Street's only NYC datacenter nearly caused a catastrophic disaster, as the sprinkler system was set to activate and potentially drown the facility. The systems team sprang into action, racing to pull every power cord to prevent damage from the impending deluge. Fortunately, their quick thinking and "dumb luck" averted a disaster, saving the datacenter from destruction. This incident highlights the importance of having a skilled and proactive systems team, as well as the potential risks and challenges of housing critical infrastructure in close proximity to the trading floor, a decision driven by intellectual property concerns and a desire to protect sensitive trading strategies.