"Call of Duty" is coming to life. Fans of the shoot-'em-up franchise are converging Friday on the sprawling 12-acre compound where Howard Hughes built the Spruce Goose for the inaugural "Call of Duty XP" convention, a two-day event celebrating the Activision Blizzard Inc. military shooter with game previews, real-world recreations of "Call of Duty" levels and a performance by Kanye ...