There’s probably no such thing as a hostile environment for an NFL preseason game, but if ever there were going to be one, the Seattle Seahawks will be in it this summer. The NFL announced its preseason schedule Thursday and the highlight for Seattle is a trip to Green Bay to face the Packers on Aug. 23, a Friday night game that will be shown nationally on CBS. The Seahawks will play at San Diego in the first week, then host Denver prior to the trip to Wisconsin. The Week 4 matchup will be at home against Oakland. The regular-season schedule will be released later this month.