I had a friend heading to Japan today, and was on UNITED 837 from SFO to NRT, he was diverted to OKO - Yokota Air Force Base. He left me a voice with very little details, but he was on the ground on the US Air Force Base.
Here is the latest Info provided by 374th Airlift Wing Public Affairs office:
Several commercial aircraft have diverted to Yokota Air Base from Narita International Airport, after it closed in response to an earthquake that hit mainland Japan at 2:50 p.m. today.
"The 374th Airlift Wing is prepared and ready to assist during this time of crisis," said Col. Otto Feather, 374th Airlift Wing commander.
Here are more photos from the US AF in Yokota