Book excerpt: Sprawling along the banks of the Columbia River, the city of Vancouver has grown from a remote fort to a metropolis. Home to the first operating airfield in the United States, it's seen triumphs and tragedies by air, land and sea. Shades walk across bridges and disappear, shadows haunt the courthouse and voices echo through empty barracks. Ghostly mules, once used for army transport, have been spotted near their old barn on Fifth Street, and the scene of a plane crash from more than fifty years ago sometimes looks as fresh as the day it happened. Join author and historian Pat Jollota as she uncovers the fascinating stories behind the unexplainable.