 in the wake of the assassination attack in Pennsylvania. Today's rally being held indoors, that's easier to secure, with police in Grand Rapids saying the department is working with federal law enforcement with an unwavering commitment to safety. Jeff Manasso, Fox News. Air travel troubles continue following Friday's IT outage that caused more than 3,000 flights to be canceled yesterday. More than 1,100 flights have been canceled today, according to FlightAware.com, more than half of them Delta and United flights.