WWII Aircraft Corvallis Airport, Oregon

Four perfectly restored WWII aircraft are visiting Corvallis for three days: P-51 Mustang, B-25 Mitchell, B-24 Liberator, 
and a B-17 Flying Fortress.
My friend and I walked through the B-24 and the B-17.
The B-24 is the only operational aircraft of its type in the world.