Wendy Harris looking at the SDI screen.[1]

The SDI screen is a video screen in the Hall of Justice that the Justice League uses to keep in contact with the Secret Department of Investigation, and also allows them access to video files that the Department sends to them, often times alerting them to dangers across the globe, that the Trouble Alert might not have detected.

It is this video screen that the SDI keeps in contact with the League with the most, although occasionally when high priority communications are necessary, they call on the CDQ.


  1. As seen in The Ultra Beam.
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