sentences:  In a June 2011 interview with NPR's "All Things Considered", Casey said that TIV is still in service and is designated as the backup vehicle in the event TIV 2 breaks down during a shoot.Casey and his team developed and built the second Tornado Intercept Vehicle, dubbed TIV 2, to be featured in their next IMAX movie and the "Storm Chasers" series.Work began in September 2007 by forty welding students at the Great Plains Technology Center in Lawton, Oklahoma and was completed in time for the 2008 tornado chase season.