FOD Walks at Yokota Published Oct. 13, 2010 By Airman 1st Class Ryan Lis 374th Airlift Wing Public Affairs YOKOTA AIR BASE, Japan -- To keep planes in the air, a lot of measures need to be taken to ensure their safe landing and takeoff. Airman First Class Ryan Lis talked to MSgt Ernie Rivera and A1C Nolan Locken to find out about a weekly check made at Yokota Air Base that helps make sure planes and their crews stay safe.