TENA description and reference links

presentations/10_TENA_References.md

+# Test and Training Enabling Architecture (TENA)
+
+```
+The United States Office of the Secretary of Defense Test Resource Management Center (TRMC)
+has developed a common architecture to support effective integration and reuse of testing,
+training, and simulation capabilities that require real-time collaboration between
+distributed computer systems operating within diverse testing and training environments.
+Through the establishment of the Test and Training Enabling Architecture (TENA),
+the interoperability and reuse of range assets are tremendously improved,
+thereby the reducing development, operation, and maintenance costs of range systems.
+```
+
+1. [TENA Home](https://www.tena-sda.org/display/TENAintro/Home)
+
+2. [TENA About](https://www.tena-sda.org/display/TENAintro/About+TENA)
+
+3. [TENA Introduction Documentation](https://www.tena-sda.org/display/TENAintro/Documentation)