Police have arrested two US Navy men they say were found in possession of explosives and fireworks. Ledyard police said an officer noticed explosive materials Saturday in a vehicle parked in a hiking area, and an investigation led to a storage facility in Gales Ferry that held a larger amount of material. John Mallow, 22, and Gary Braun, 19, both of the Naval Submarine Base in Groton, were charged with possession of explosives and fireworks. Mallow was also charged with manufacture of bombs. Police said there is no indication that they intended to do any damage or hurt anyone.