and then to isolate the root cause of this incident to determine if a defect existed that posed an unrenl risk to safety. the technical team at ntsa working in collaboration with the department of energy and defense used every second over the past six months to provide the data needed for the agency decision. and they delivered an innovative and expert fashion. during this period i had any notion that an imminent safety risk existed to the american public, i would have been sure that public knew of that risk immediately. we at ntsa rely on data to drive our decisions. as i noted in my written statement, we undertook several volt crash tests to replicate the june incident. the agency reviewed all the crashes that involved volts. we found no results of post crash fires. we looked at a variety of data sources and all relevant early morning recording data and vehicle owner questionnaires. the agency found no indication of a post fire crash risk in the volt, nor were we able to re-create the june incident at the vehicle level. we shared our initial thoughts for the public on this in november.