Derek Dunne: Security Guard/Time Traveler

How about a Drabble today? Anyone figure it out?

 

             Performing nightly duties at the Dallas high-tech complex, Derek made friends with a Chronojaunt Lab physicist. One evening, he discovered the lab lights and equipment on, but his friend had disappeared. The illumined computer read zero for X, Y, and Z, but T read minus numerous years. He clicked the mouse. The room transformed into a grassy knoll. His friend stood there naked and Derek realized he was as well. Derek didn’t remember two naked guys arrested on that historically fateful day. Of course not, seeing time travel is impossible. Derek Dunne was just a fictional character by Neal Roll.