The flying building

Rock had selected a table on the deck of a Mexican restaurant in Little Rock's River Market, and he and the group with him fit with the festive spirit of almost everyone there. He was joined by friends Chris and Erin, Erin's father Paul, Rock's maternal grandmother, and several of her friends who, like she, had been dead since the 1990s.
The deck overlooked the Arkansas River, and as Rock ate, he tried to describe the Mexican TV dinners his grandmother had kept throughout his childhood in her back-porch deep freeze. "They had two big tacos, with two enchiladas and a hot tamale all smothered in chili, and of course beans and rice," he said. "I'm telling you, they were great."
Paul laughed and said he wished he could change his order, but as he spoke, Rock suddenly saw something absolutely startling fly by above North Little Rock. It looked like a skyscraper, apparently propelled by the red glow at its base. He was for a moment too stunned or frightened to speak. He sat with his grandmother's friends Jo Baker and Miss Clyde on the south side of the long table, which gave them a clear view of the river and the flying building. He was almost scared to find out what it was.
"Look at that," Rock finally said. "What is it? For Christ's sake, it looks like one of the Twin Towers."
Before he could get anyone save Miss Clyde's attention, the UFO had disappeared behind the downtown skyline. It would reappear at brief intervals between buildings, but before Rock could point out this nearly unimaginable sight, it was obscured by a bank of clouds.
"How was that possible?" Miss Clyde said in a tone that clearly bespoke astonished fear. "Do you suppose someone like Bill Gates, or maybe the U.S. government had something to do with it?"
"I don't know," Rock said, his eyes still glued to the dark orange sunset for another glimpse. "Maybe Elon Musk was in on it."