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An actor taking part in an earthquake-response drill is handled by an intensive care unit at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023.

An actor taking part in an earthquake-response drill is handled by an intensive care unit at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023. (Akifumi Ishikawa/Stars and Stripes)

YOKOSUKA NAVAL BASE, Japan — Actors with gory mock injuries co-starred in a three-day drill that simulated a large-magnitude earthquake that inflicted mass casualties at the home of the U.S. 7th Fleet south of Tokyo.

But top billing went to emergency workers from U.S. Naval Hospital Yokosuka, which coordinated the training Wednesday through Friday alongside Navy Region Japan, the American Red Cross, the Japan Self-Defense Forces and other organizations.

The emphasis was on medical treatment and triage, hospital spokesman Gabriel Archer told Stars and Stripes by email a day before the training kicked off.

Actors taking part in an earthquake-response drill wait to be evacuated by helicopter at Yokosuka Naval Base, Japan, Thursday, May 18, 2023.

Actors taking part in an earthquake-response drill wait to be evacuated by helicopter at Yokosuka Naval Base, Japan, Thursday, May 18, 2023. (Akifumi Ishikawa/Stars and Stripes)

An actor taking part in an earthquake-response drill goes through triage at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023.

An actor taking part in an earthquake-response drill goes through triage at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023. (Akifumi Ishikawa/Stars and Stripes)

Actors taking part in an earthquake-response drill go through triage at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023.

Actors taking part in an earthquake-response drill go through triage at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023. (Akifumi Ishikawa/Stars and Stripes)

On Wednesday, hospital executives established an emergency headquarters and coordinated their response, while actors assumed the roles of victims with serious burns and bloody lacerations.

Medical personnel continued training on Thursday, with hospital staff and members of the Air Force's 374th Airlift Wing used helicopters to fly simulated casualties from a seaside helipad to U.S. Army Camp Zama roughly 30 miles away.

The drill tests the hospital staff's response to a major disaster, as well as their ability to work with their American and Japanese partners, Archer told Stars and Stripes by email Tuesday.

“The focus of this exercise is to increase emergency preparedness and to test the ability to respond to large-scale disaster events,” he said.

Makeup is applied to an actor taking part in mass casualty training at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023.

Makeup is applied to an actor taking part in mass casualty training at Yokosuka Naval Base, Japan, Wednesday, May 17, 2023. (Akifumi Ishikawa/Stars and Stripes)

Actors taking part in an earthquake-response drill are evacuated by helicopter at Yokosuka Naval Base, Japan, Thursday, May 18, 2023.

Actors taking part in an earthquake-response drill are evacuated by helicopter at Yokosuka Naval Base, Japan, Thursday, May 18, 2023. (Akifumi Ishikawa/Stars and Stripes)

Other participants included health and risk management company International SOS; the 374th Medical Group and 459th Airlift Squadron from Yokota Air Base; and the BG Crawford F. Sams U.S. Army Health Clinic; and U.S. Army Medical Department Activity-Japan from Camp Zama.

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Alex Wilson covers the U.S. Navy and other services from Yokosuka Naval Base, Japan. Originally from Knoxville, Tenn., he holds a journalism degree from the University of North Florida. He previously covered crime and the military in Key West, Fla., and business in Jacksonville, Fla.

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