It depends which NCIS you are referring to. CBS broadcasts NCIS, NCIS: Los Angeles, and NCIS: New Orleans. NCIS is aired on Tuesdays 8/7c. NCIS: Los Angeles is aired on Mondays 10/9 c. NCIS: New Orleans is aired on Tuesdays 9/8c.
Whereas groins are built to change the effects of beach erosion, jetties are built so that a channel to the ocean will stay open for navigation purposes. They are also built to prevent rivermouths and streams from meandering naturally.
Erosion control. 1  Conservation tillage: It is used as a way to conserve soil and water resources as well as to mitigate the problems of erosion by tilling strips of soil for planting new crops and maintaining untilled portions of the land to serve as anchors for the soil.