A Border Patrol Mobile Response Team (MRT) provides a group of organized, trained, and equipped Border Patrol Agents capable of rapid movement to regional or national incidents in support of priority U.S. Customs and Border Protection (CBP) operations. With teams located throughout the country, the MRT provides a flexible and enhanced tiered-response to counter emerging, changing, and evolving threats. The Houlton Sector MRT was the first to be organized on the northern border, and it offers specialized skills in cold weather and marine environment operations. From the information given above, it can be validly concluded that A) being capable of moving rapidly to regional or national incidents is a defining feature of Border Patrol Mobile Response Teams B) there are some Border Patrol Mobile Response Teams that are constituted in a form other than as a group of organized, trained, and equipped Agents C) there are some organizations besides the Houlton Sector MRT that offer specialized skills in cold weather and marine environment operations D) any unit that is outside the ranks of a Border Patrol Mobile Response Team is without organization, training, and equipment and may be incapable of movement to regional or national incidents E) the only