International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper describes the basic foundations of XML and the description of a JAVA-based eXtensible Markup Language (XML) prototype application being developed for the E-9A Airborne Telemetry Platform. In an effort to eliminate proprietary software and improve range safety data exchange, radar boat position data will be tagged with pre-defined XML tags prior to being transmitted from the E-9A. Ground Station software will then processes the XML-based boat position data to provided a means for ground station personnel to strip out data and distribute over the Internet. Leveraging XML for a telemetry application provides the ability to efficiently exchange telemetry data between users over the Internet and harness a web based standard with industry wide support.