Eric Sick, a Certified Cost Estimator/Analyst (CCEA), is experienced in cost estimation for commercial and public sector clients. For the Deputy Assistant Secretary of the Army (DASA), he analyzed 20 years of Cost and Software Data Reports (CSDRs) for three Acquisition Category (ACAT) I programs to develop a MilStd 881D WBS 5 level cost model validated within a 16% accuracy range.