In June 2008, the NFPA World Safety Conference and Exposition was held in Las Vegas, and there were activities presented related to proposed changes to NFPA standards. Most notably, there were five Certified Amending Motions (CAM's) related to the 2009 Edition of the 70E. Of those five CAM's, the two that arguably had the biggest impact were motion sequence No. 70E-1 and motion sequence No. 70E-2.