Portland International Airport is debuting its brand new main terminal on Wednesday. The big construction wall behind the old ticketing counters will come down, and travelers and visitors will get to see the sweeping mass timber roof for themselves. KGW’s David Molko got a sneak peek when he participated in a “dress rehearsal” for the new ticketing counters and security checkpoints — and he was blown away by what he saw. KGW will have live coverage from PDX on Wednesday on KGW News at Sunrise wi