Chemical facilities that registered with the U.S. Department of Homeland Security (DHS) must also complete Chemical-Terrorism Vulnerability Information (CVI) training.  Any information or correspondence from DHS relating to the Chemical of Interest (COI) at your facility such as anhydrous ammonia or ammonium nitrate, which required facilities to register with DHS, must also be marked as CVI and be viewed by persons who also have completed CVI training.  The training is available online and takes approximately 20 to 30 minutes to complete.  Once the training is complete, you can print off a certificate of completion that states you are an authorized CVI user.  To access the online training, click on the heading above.