Anthony R. Chakalis is an engineering technician in the National Fire Research Laboratory (NFRL) of the Fire Research Division (FRD) of the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST). Mr. Chakalis joined NIST in April 2007 and has provided technical support for a wide range of fire experiments in the Large Fire Lab (LFL). His duties at the LFL include installing measurement instrumentation, fabrication of experimental specimens and fixtures, and suppression of large fire experiments. He is a qualified operator of the LFL large fire heat release rate calorimeter data acquisition and control system, and a trained operator of the LFL exhaust gas emissions control system. He has assisted in several off site fire experiments including the Positive Pressure Ventilation test series in Toledo, OH, and the Wind Driven Fire series on Governor's Island, NY.