"The Border Patrol recognizes the need for specialized teams capable of handling uncommon and dangerous situations. Such situations would be outside the normal scope of Border Patrol agent duties conducted while supporting the current U.S. Customs and Border Protection Strategic Plan to: 1. Prevent terrorism; 2. Strengthen control of the U.S. Borders; 3. Protect America and its citizens The Special Operations Group accomplishes these goals through planning, training, and deployment to domestic and international intelligence-driven and antiterrorism efforts, as well as disaster and humanitarian related special operations."
U.S. Customs and Border Protection: http://www.cbp.gov/