A special symposium featuring some of the area's leading authorities on substance abuse awareness and prevention. Scheduled speakers include Officer Mike Thomas, drug recognition officer with the Liberty Lake Police Dept., Scott Ryman, who spent 40 years as an instructor/administrator with Spokane County Juvenile Court and Ken Zigler, who lost his son, Tim, to a prescription drug overdose in 2006. At Liberty Lake Portal, 23403 E. Mission Ave.