DODEA elementary students learn soroban, a Japanese math skill, in Okinawa, Japan.

DODEA students learn ancient math skills with Japanese abacus on Okinawa

A soroban “allows students to see and manipulate a physical representation of abstract numbers,” according to The Japan Society website. Japanese third- and fourth-graders are required to practice soroban in math class, according to the education ministry’s website.

‘Feeling of gratitude’: Olympians video chat with military kids at bases in Japan

A trio of Olympic swimmers gave tips to youngsters on military bases in Japan during an online get-together organized by the USO.

Sonobuoys, 1977

Acoustic monitoring devices called sonobuoys are loaded into the belly of a submarine-tracking P3C Orion aircraft from Patrol Squadron 40 prior to a patrol over the Pacific Ocean.

Lost umbrellas in Tokyo, 1975

Masao Iizuka, director of the Tokyo Metropolitan Police Department's Lost and Found Center

Wavy Gravy: Just call him the 'psychedelic relic'

He's done it again.

Artistic background at Yokota, 1976

Kaoru Miyazato, a sixth-grader at Yokota West Elementary School, practices his yo-yo techniques in front of a rank of pop art partridges.

Helicopter lands on the USS Oklahoma City, 1974

A helicopter is guided to a landing on the deck of the Yokosuka-based guided missile light cruiser USS Oklahoma City, the flagship of Vice Adm. George P. Steele, commander of the U.S. Seventh Fleet.