The base prides itself on having kept the number of COVID-19 cases exceptionally low.
Part of a searchlight dome was missing during a check of the Osprey at about 5 p.m. Tuesday.
The U.S. military is urging its personnel in Japan to call pest control if they spot Asian giant hornets.
Some service members in Japan saw a welcome surprise in their paychecks Wednesday.
Tokyo officials detected the chemicals, commonly known as PFOS and PFOA, in two wells near Yokota Air Base.
U.S. military bases reported minimal damage after a full day hunkered down against record-breaking rain and strong wind.
Authorities urged U.S. military personnel and their families at bases on the Kanto Plain to stock up and sit tight.
The Air Force added a pair of special operations squadrons in Japan charged with flying and maintaining CV-22 Ospreys.
Master Sgt. Nicholas Vollweiler, 35, was stabbed to death with a knife at his home just outside Yokota's east gate.
Yokota Air Base and Camp Zama appeared to be the worst hit, despite the eye of the storm traveling closer to other bases.
Maj. Gen. Stephen Neary was relieved as head of Marine Corps Forces Europe and Africa by Commandant Gen. David Berger.
The Marine Corps has officially retired the AH-1W Super Cobra helicopter.
The Air Force plans to slash the number of weapons system officers by half to make room for more pilots, a top general said.
The investigation into the incident remains ongoing.
A group released a second list of endorsements for the former vice president.