Wing CEO Adam Woodworth shows the Alphabet company's delivery drone to CNBC's Katie Tarasov on April 25, 2023, in Hollister, California.
Walmart said it made more than 6,000 drone deliveries across seven states in 2022 with DroneUp, Zipline and a third partner, Flytrex.
Amazon's VP of Prime Air David Carbon showcased the current MK27-2 drone in Westborough, Massachusetts, on Nov. 10, 2022.
Prime Air drones, along with most other delivery drones, operate with a number of federal exemptions that greatly restrict where and how they can fly.
Prime Air drones are not expected to exceed 58 decibels, according to an FAA assessment, about the noise level of an outdoor air conditioning unit.