A KC-135 Stratotanker, like the one shown here in a July 24, 2020, photograph, rolled from its parking spot at Kadena Air Base, Okinawa, Japan, on June 15, 2024. (Vincent De Groot/Iowa Air National Guard)

A barrier was damaged when a KC-135 Stratotanker rolled away from its parking spot last week on the flight line at Kadena Air Base, Okinawa, the Air Force said Monday.

“A KC-135 assigned to the 18th Wing rolled from its parking space and struck a barrier after returning to Kadena Air Base” on Friday, according to an unsigned email Monday from the 18th Wing.

“There were no injuries, and a safety investigation is underway to determine the cause of the incident,” according to the email.

The wing provided no further information about the incident.

The KC-135 is an aerial refueling aircraft that inflight can transfer up to 200,000 pounds of fuel, enough to fully refuel 16.5 F-16 Fighting Falcons equipped with two external fuel tanks.

It is also capable of carrying litter and ambulatory patients during aeromedical evacuations.

Last month, a similar event occurred when an F-22 Raptor advanced fighter also rolled away from its parking spot on Kadena’s flight line.