February 4 Roughly 10 pounds of the plastic explosives reportedly “disappeared during a long training exercise two weeks ago." (Wikimedia Commons) Several pounds of explosives have gone missing from Marine Corps Air Ground Combat Center Twentynine Palms, California, ABC 10 San Diego first reported. The southern California news station said roughly 10 pounds of the plastic explosives “disappeared during a long training exercise two weeks ago,” with the belief that it was stolen. The unit’s commanding officer “is considering extending the training exercise until the explosives are found,” ABC reported from military sources. Marine Capt. Zachary Colvin, a spokesman for the base, told Marine Corps Times Thursday that the Marine Corps was unable to comment on the situation because the Naval Criminal Investigative Service had taken over the case.