The United States sent one unmanned Super Scorpio ROV from San Diego, airlifted via C-5 Galaxy transport.

It was intended that these unmanned rescue vessels, with their robotic arms, would be able to cut the nets or cables that anchored the submarine.

The American ROV was assembled on the support ship Priz although they were not required to get underway as the British Scorpio was able to execute the rescue.

A tactical decision by the United States Pacific Fleet command team at Pearl Harbor, allowed the British crew to use the limited local resources toward one rescue asset.

Meanwhile, to conserve energy and oxygen, the crew of AS-28 shut down the submarine's non-essential systems (including the heater), donned thermal suits, and rested.

The rescue of AS-28 by Scorpio was also featured as the subject of the tenth episode of the 2007–2008 documentary series Critical Situation, entitled "Running Out of Air".