I'll be sitting-in for John Seigenthaler tonight.

We have been keeping close tabs on this afternoon's highway overpass collapse in suburban Montreal, Canada. The pictures we've been watching coming in over the satellite have been quite dramatic, as officials were racing to remove concrete slabs in search of victims.  We are planning a full report for tonight's broadcast…

Meantime, the sudden resignation of Florida Congressman Mark Foley over inappropriate emails sent to a young former Congressional page, is raising lots of questions about the House page program. NBC's Mike Taibbi will report tonight on when officials within the page program became aware of the correspondence, and what actions they took.

If you are one of those airline travelers who are comforted by the sight of a silver-haired, well-seasoned looking captain in command of your flight you'll be interested in a new push to raise the FAA's mandatory retirement age for U.S. commercial airline pilots. As it currently stands, pilots cannot operate a commercial flight after they turn 60.  But some argue today's 60-year-olds are a lot fitter and healthier than they were when the rule was first established in 1959. Tom Costello will have more in this evening's In-depth segment.

I'd be pleased to have you join us tonight.