WTHT's Garrison Departs: Binnie WTHT/Portland, ME PD Corey Garrison has exited after more than a year in the position. He joined for a second run in 2018 (CAT 8/8/18) after previously serving as MD from 2007-2014, rising to his most recent post last year (CAT 4/23/20). Reach Garrison here. No word on plans for the position.