I assume 10:40 PM as a typo error for the R/O. It strikes me as odd that Jacobs did not show the door to Reed who described Jacobs as "very upset" in the R/Os report. I'd start to look into any possible connection between Jacobs and "RB" or "K". Also, the date as 12/11/87 is a good place to start with any events, etc...
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