Sen. Tammy Duckworth pushes for answers over airplane evacuation safety

Sen. Tammy Duckworth, the ranking Democrat on the Senate's aviation subcommittee, is sending a letter to the new FAA administrator, demanding answers on plane evacuation safety. The Illinois senator is concerned about the FAA's 90-second evacuation standard following a string of aircraft evacuations. CBS News senior transportation correspondent Kris Van Cleave reports.