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Many programs risk cost growth and schedule delays because of software development issues. In the 2010 Government Accountability Office (GAO) defense acquisition report, Assessments of Selected Weapon Programs, the programs with count growth in significant source line of code (SLOC) since development startup experienced accelerated cost increases and excessive schedule delays relative to other programs. The report asserted that collecting, tracking and containing software defects in the phase where they occur is an excellent cost-control management practice. Programs surveyed indicated that an average of 31 percent of defects corrected were detected after the development phase in which they were inserted. Capturing software defects in phase is critical because detecting defects out of phase results in expensive program rework.