A new analysis by the Pentagon's top weapons tester aims to dismantle a perception that testing is a cause of weapon system cost growth and schedule delays, tracing the root cause of nearly every big-ticket weapons program since 2000 that has encountered programmatic trouble. The Aug. 25 briefing by the office of the director of operational test and evaluation, titled “Reasons Behind Program Delays,” significantly expands on a similar 2011 analysis and could arm supporters of the office in Congress...