Since then, not only the U.S. DoD, but other countries as well have adopted this system sustainment strategy as many programs that have employed it have yielded increased system availability, shorter maintenance cycles, and/or reduced costs.
Since then, not only has the U.S. DoD adopted the PBL approach, but other countries have adopted this strategy as well. Many programs that have employed it have yielded increased system availability, shorter maintenance cycles, and/or reduced costs.