As noted at the Religion Clause, the Baltimore Sun carries an article on the ACLU’s most recent threat of “legal action” against the US Naval Academy for holding “mealtime prayers.”  The Academy said it

does not intend to change its practice of offering Midshipmen an opportunity for prayer or devotional thought during noon meal announcements.

Such challenges have been going on for years, and were discussed here more than 2 years ago. The Alliance Defense Fund has volunteered to help defend the Navy against the ACLU.