joanne bundock, a business executive, is in first class. >> my job required me to go around the worldntries we did business in. i was a frequent flyer, on planes more than i was at home. >> 15-year-old lisa popo is headed home from a study abroad program and bringing a french exchange program with her to canada. >> i was having fun with my exchange student beside me. i was trying to tell her more about toronto. >> as the plane closes in on toronto airspace, the radar shows a line of violent storms headed straight for pierson international airport. >> fierce thunderstorms moving through the airport area. >> a weather alert sends ground crews scramling for cover. >> everything was fine until we got to toronto and approached the city. the pilot came on and said there was a major thunderstorm in toronto and we were going to circling a while before we could be cleared to land. >> after circling for 20 minutes, the alert is lifted and air france 358 is cleared to land on runway 2-4 left. but as the plane begins its final descent, the intense st m storm, the captain and first officer had bee