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.
Made from a mixture of sand and special additives, it is designed to harden with moisture. Once hardened, it will resist joint wash-out, lock in paver sand and reduce weed growth. 1  A sweep-in mixture designed to harden and lock joint sand into place.  Use for: driveways, patios, walkways or any area with pavers.