Yokota Air Base and the Yokosuka naval base are well-known U.S. bases in the Tokyo area. But few people know the U.S. military also has a major facility right in the heart of the city.
Since 1945, U.S. Forces Japan has been keeping an off-limits heliport and buildings in a complex near the Roppongi entertainment district.
On April 19, many visitors at an observatory in a high rise at the Roppongi Hills complex were surprised to see low-flying American helicopters nearby.