It’s not just Amazon.com that’s working on drone delivery. Alphabet’s Google X is delivering goods by drone, and there is a new video to prove it.

Aaref Hilaly, a partner with Sequoia Capital, tweeted out video of a drone dropping off a small package during a Google GOOG, -1.16% GOOGL, -1.24% event in Arizona on Monday.

Google Project Wing, a project to build drones intended to deliver goods across the country, is being developed through Google X, the company’s tech research arm that includes Google’s driverless car project and Project Glass.

According to Hilaly’s tweet, Google says its drones can fly five miles within five minutes. The drones would likely be used for disaster relief to delivery supplies to people in need.

“Even just a few of these, being able to shuttle nearly continuously could service a very large number of people in an emergency situation,” Google X’s Astro Teller said in an interview with the BBC.

Project Wing was first unveiled in August 2014 with a fixed-wing drone, which was later scrapped because it was difficult to control.

Google and Amazon AMZN, -1.02% aren’t the only companies pursuing drone delivery. Silicon Valley startup Matternet is already delivery payloads of up to 2.2 pounds as far as 12 miles.

Google separately is working on a different drone project through its April 2014 acquisition of Titan Aerospace, a startup that makes solar-power drones intended to fly nonstop for years. Google said the technology could be used to collect images and offer online access to remote areas.