 The Biden campaign is also pulling political communications, including TV ads, in the wake of this shooting. Looking ahead, security will be ramped up at the Republican National Convention, which starts tomorrow in Milwaukee. Chairman Michael Whatley on Fox News. This is going to be a facility where we're going to be able to have 50,000 delegates and alternates and guests and members of the media who are going to be here and who are going to be safe. That's very critical for us.