Live, Virtual, Constructive (LVC) interoperability can be defined as the ability for assets, models, and effects from one training environment to be seen, affect, and be affected within the rest of the training environment. LVC interoperability has been implemented in a number of different ways for a number of years where most of the approaches integrate LVC assets through defined protocols, various gateways or translators, and a set of messaging collection tools. To a much lesser extent, some implementation approaches also develop a common object model and middleware, and use a set of system engineering and business practices that drive a given particular LVC solution. The U.S. Army Program Executive Office (PEO) Simulation Training and Instrumentation (STRI) is taking those basic principles and practices and applying them on specific, relatively new Live, Virtual, and Constructive simulation product lines attempting to influence their design early in their development cycle by exploring options that could yield a more robust, systematic LVC interoperability solution set. This paper provides an overview of several LVC assets within the PEO STRI product lines and their respective Live, Virtual, and Constructive domain common components, and how they are being integrated to address current and future LVC training needs by the Army and DOD. In particular, the paper will focus on the Army "Live" training product line, and describe how interfaces, standards, and training methodologies are being developed to support specific LVC use cases required by the "Live" training community. This paper will also provide lessons learned, challenges encountered, and recommended way ahead from a "Live" perspective.