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Staff Sgt. Jose Cartagena, Train, Advise, Assist Command-Air fixed wing advisor explains the proper way to set an exhaust pipe for the heat exchanger on a new generation heater prior to starting. Cartagena, a Puerto Rico Air National Guard member, is uniquely qualified to provide the training, because the guard routinely provides familiarization training to Airmen awaiting formal training. This training that is useful to guard members, is also being found useful by the Afghan Air Force. (US Air Force photo by Senior Master Sgt. J. LaVoie/Released)
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