The acting Pentagon acquisition chief said today the Defense Department has begun a new series of weapon system reviews that could impact future budget and programming decisions. “We are in the midst of a rebalance from a program-centric approach to a portfolio-based perspective," said Gregory Kausner, who is performing the duties of under secretary of defense for acquisition and sustainment. Speaking at the Common Defense 2021 conference, Kausner said DOD is conducting integrated acquisition portfolio reviews, or IAPRs, as it...