One of the main challenges to actualizing the promise of electronic health records in improving patient care is that they are developed as part of proprietary systems and are not always interoperable. FierceHealthIT asks if a $11 billion contract to develop electronic health records for the Department of Defense could "be a game-changer for healthcare in the United States due to its sheer size and scope." The system will integrate a commercial electronic health records system to cover the DoD's nearly 10 million beneficiaries, FierceHealthIT reports.