 Also colocated with the station is the oldest lighthouse on the Northwest Coast of the United States, Cape Disappointment Light, marking the north side of the Columbia River Bar.Less than two miles (3 km) to the northwest is North Head Light, which provides a beacon for the northern approaches to the Columbia River Bar.The station's primary missions include providing search and rescue to commercial and recreational mariners within of the Columbia River entrance and providing a maritime law enforcement presence near the approaches to the Columbia River including execution of homeland security missions.