33 SAN DIEGO – A bottle of brake fluid and a bag of pool chlorine can stay harmless when stored safely in a garage. When you combine the two, the polyethylene glycol mixed with the calcium hypochlorite will seem quiet at first. Two minutes later, the chemical reaction of the two will ignite a spark, and an 8-foot flame will shoot in the air. This was one of the demonstrations taught by the FBI to Army Reserve Soldiers during Guardian Shield at Marine Corps Air Station (MCAS) Miramar, California. Army Criminal Investigation Command (CID) special agents, military police and Soldiers from the 200th Military Police Command spent two weeks training with the FBI on homemade explosives, post blast investigation, surveillance detection, FBI profiling and hostage negotiation. Soldiers also had the opportunity to train on criminal intelligence, logistics security, drivers training and combat lifesaver.