From a press release issued by CMRA:

After witnessing the huge benefits that Air Fence has brought to the motorcycling community and the purchase of Air Fence to be used by the Central Motorcycle Roadracing Association at Texas World Speedway by the Air Fence Fund, the CMRA has decided to purchase Air Fence for use at other venues as well.

The CMRA is purchasing 4 sections, 112 feet of Alpina Air Module, FIM Type A protection the highest level currently offered. The CMRA would like to thank the racers who have supported the series and in doing so, funded the purchase of these portable sections, and especially John Ulrich’s Air Fence Fund that has brought added safety to the consciences of the racing public.

The CMRA is the South Central affiliate of Champion Cup Series and holds races primarily in Texas and Oklahoma.