In this Act: (1) Situational awareness The term situational awareness means a knowledge and unified understanding of unlawful cross-border activity, including threats and trends concerning illicit trafficking and unlawful crossings (which may be used to forecast future shifts in such threats and trends), and the operational capability to conduct continuous and integrated surveillance of the international borders of the United States. (2) Southwest border The term southwest border means the land and maritime borders between the United States and Mexico.