Feds: 3 Stockpiled Weapons, Fearing Martial Law in US They were also working on explosives, say authorities By Newser Editors and Wire Services Posted Aug 4, 2015 3:51 PM CDT 178 comments Comments In this July 15 photo, a convoy of National Guard troops moves on Camp Swift as part of the Operation Jade Helm 15 military exercise in Bastrop, Texas. (Jay Janner/Austin American-Statesman via AP) (Newser) – Three North Carolina men fearing a government takeover and martial law stockpiled weapons, ammunition, and tactical gear while attempting to rig home-made explosives, according to charges announced by the Justice Department. The men from Gaston County, near Charlotte, were arrested by federal authorities on Saturday after more than a month's investigation. Walter Eugene Litteral, 50, Christopher James Barker, 41, and Christopher Todd Campbell, 30, are accused of stockpiling guns and ammunition, as well as attempting to manufacture pipe bombs and live grenades from military surplus "dummy" grenades, according to unsealed criminal complaints released yesterday. The close to 60 pages of information compiled by federal authorities since July include allegations Litteral planned to makes explosives out of tennis balls covered in nails and coffee cans filled with ball bearings. According to the documents, both Litteral and Campbell spoke openly about their opposition to Jade Helm 15, a series of ongoing special forces training missions in several Southwestern states that has drawn suspicion from residents who fear it is part of a planned military takeover. The federal conspiracy charges carry a maximum penalty of five years in prison and a $250,000 fine. In addition, Campbell has been charged with a separate firearms charge punishable by 10 years imprisonment and a $10,000 fine.