Walmart has applied for a U.S. patent for a Warehouse in the sky, which could make deliveries to shoppers’ homes with drones .

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CNBC reported that it could be the big-box retailer’s latest move to take its e-commerce business to the next level.

Bloomberg first reported the news Friday, while the patent was first submitted in February.

The machine, similar to a blimp, could fly as high as 1,000 feet, the application says, and it would be operated either autonomously or remotely by a human pilot.