This article is about the new 800yd range in Galliano that has the shooting berm and then the protection levee behind it. The berm is not taller than the protection levee. Please focus on the comment about ballistics and levee board employee's safety.
http://www.houmatoday.com/article/20131223/ARTICLES/131229871/1319?Title=South-Lafourche-gun-range-stokes-controversy
http://www.houmatoday.com/article/20131223/ARTICLES/131229871/1319?Title=South-Lafourche-gun-range-stokes-controversy