After uncovering a buried weapons cache in the desert, Lance Cpl. Alexander Vassilopoulos uses an F-3 metal detector to look for other caches in the area during a training exercise here June 26, 2008. Cpl. Joseph Shutta calls in the report. Under the mentorship of course instructors, reserve Marines from 2nd Battalion, 25th Marine Regiment learned to identify common markings used by insurgents to hide weapons, explosives and other items underground. Both Vassilopoulos and Shutta are assaultmen with Weapons Company, 2/25.