Billy Frey is on a mission to link Alltech's expertise in agriculture with the next generation of farm leaders who are its natural market — and the concerned consumers who will be eating their products. That's why Frey is spending a substantial amount of his workweek at the downtown Lexington headquarters of iHigh, where he oversees Alltech's 3-month-old Ag Network at the online video company, which includes content from the Future Farmers of America.