Hockwold cum Wilton (""Hock/mallow wood and willow-tree farm/settlement"") is 10 miles west of Thetford, Norfolk, England and is in the borough of King's Lynn and West Norfolk, it is located near several USAF airbases, notably which Royal Air Force station near the town of Lakenheath in Suffolk, England, 4.7 mi north-east of Mildenhall, and 8.3 mi west of Thetford?