Fly-In / Drive In Breakfast at Riley's Roost before the Zenith Aircraft Open House Builder Gathering. Starting at 7 am, hosts Glenn and Anita Riley invite Zenith builders and enthusiasts to their annual fly-in breakfast on June 25, at their great grass field NW of Mexico, MO. By Road: From Mexico on Hwy 22 West 2.25 miles to Hwy NN: North on NN 2.25 miles to the Riley's Roost. By Air: 1.5 miles N…