Classes The King County Technical Rescue Group instructs both initial technician classes and Tech MCO Drills for all of King County Zone 1. Initial Certification Technician Classes Jan 16, 2017 2020 Initial Instruction Classes APRIL RSI CANCELED April 6 - 10 Rope CANCELED April 27 - May 1 MAY Water Class #1 - May 18 - 22 Class #2 - May 26 - 30  CSR May 18 - 21 JUNE Trench June 8 - 12 Register HERE for ALL Classes          Tech MCO Drills Jan 16, 2017 . Page Last Updated: Mar 17, 2020 (12:44:00)