The border and coastal defense forces of the PLAA are stationed in border and coastal areas, and on islands. They are responsible for defense and administrative tasks such as safeguarding the national borders, coastlines and islands, resisting and guarding against foreign invasions, encroachments and provocations, and assisting in cracking down on terrorist sabotage and cross-border crimes. The border and coastal defense forces focus on combat-readiness duties, strengthen the defense and surveillance of major directions and sensitive areas, watercourses and sea areas in border and coastal regions, maintain a rigorous guard against any invasion, encroachment or cross-border sabotage, prevent in a timely fashion any violation of border and coastal policies, laws and regulations and changes to the current borderlines, carry out civil-military joint control and management, and emergency response missions promptly, and effectively safeguard the security and stability of the borders and coastal areas.