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A man walks out of the van, obviously in no hurry as he slowly opens the door and steps out, one foot after the other. He wears a workman’s uniform, and looks to be in his forties, traces wrinkles in his skin and strands of grey in his hair. One of his hands holds a wirestripper, which he keeps hold of as he speaks and gestures towards the tower. After getting his bearings and taking his time to look over the group, he says

“If you’re here, then I guess that means the tower must’ve worked. It’s like a big ole’ beacon, supposed to attract people, but only those with good intentions. Right now I’ve ran it with enough charge that it’s aetheric flux field oughta hit the whole city, but someday want to really overclock it, get people all across the world, across others worlds to be able to see it.”

With the back doors of the van now open one can see that the interior of the van is far larger than the exterior. It could fit a large one bedroom apartment inside, and from the doorway you can see that every free corner is devoted to an elaborate electronics workshop. A table crowded with tools dominates the center of it, soldering irons, lenses, lamps, mechanical arms strewn about, and the walls are covered in bins holding electronics parts. Wires, antennas and oscilloscopes stand on carts and on the floor, all of it stubbornly analog; there isn’t a single computer in sight, but there are plenty of vacuum tubes and CRT monitors. Aside from tripping hazards, it’s messy but not dangerous. It’s difficult to see the far corner, but it appears that there is smaller second level overhanging the lab, with a bed and a small sofa indicating that this might be his living area. There are no exterior windows, all light comes from the glow of many, many incandescent bulbs.
He's got smile on his face, happy that the beacon worked, and happy to meet some new people. He says 

“Anyway, I’m Ezekiel Thomas, guess you could call me an electrical engineer, of a sort anyway. People told me I can get in trouble if I call myself that, cuz the work I do ain’t exactly conventional. I just say they’ve got too narrow an idea of how electricity works. If there’s something I can help you with, might be best to come on in, there’s space inside the van for everyone and that’s where I can get real work done. Oh, and that includes you too, Jianghong, I see you out there hiding. Why didn’t you tell me you was back in town?”

He turns his back and begins to re-enter his workshop, gesturing that people are welcome to follow him.