New video showing the desperate race to escape bullets in pittsburgh. dead li gunfire erupting at an airbnb there. two teenagers killed. just hours earlier, another mass shooting. nine people shot at a mall in columbia, south carolina. tonight, what we re learning about those investigations. the holiday travel crush is on. millions expected to fly or drive home over the next 24 hours. what to expect before you take off. new storm threats targeting millions this holiday weekend. the south bracing for severe thunderstorms and possible tornadoes. and we re tracking a coastal storm as well. we ll time it all out. the possible cancer cluster rocking a new jersey school. how environmentalists are investigating the possible link. and tonight, pope francis blunt message, urging peace in ukraine. calling it an easter of war. and america strong tonight. the boston marathon returns.
Then we just covid 19 headlines. much more coming up at 4:00. world news tonight is next. tonight, breaking news. the deadly plane crash right into a neighborhood. the small plane smashing into homes and into a u.p.s. truck. the plane, the homes, the truck bursting into flames. the homes burned to the ground. emergency teams racing to help the victims. two seniors pulled from their home. what authorities revealed just a short time ago. also tonight, turning the corner on this pandemic. the boston marathon returns. and tonight here, news on the america covid pill, taken if you get covid. what merck now saying their data shows. also potential boosters for moderna and johnson & johnson. how soon could we hear from the fda. late developments on the that front. the travel chaos at u.s. airports tonight. a third straight day of widespread cancellations from southwest airlines.