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As defense simulation grows more complex and more capable, it is segmenting just as it moves toward greater interoperability. Instead of diverse simulations evolving into a single, all-encompassing synthetic battlespace, the course is toward individual activities or systems simulated by powerful computing technologies. The goal of modeling developers is to treat these new simulations as modules and assemble them into large-scale simulations that are tailored to trainees' or commanders' requirements.

The accelerating tempo along with the growing number of military operations is taking a toll on joint training, but the U.S. military and its allies are compensating with technology and adaptive planning. In its first integration training event focusing on functional component commands, the Joint National Training Capability helped militaries from numerous nations prepare to fight in a coalition environment by providing modeling and simulation components. The exercise also certified the USS John F. Kennedy carrier strike group to deploy to real-world operations and provided interim training for the USS Harry S Truman group.

Exciting a land mine may not sound like a good idea, but developers of the Seismic Landmine Detection System are doing just that. A group of researchers from the Georgia Tech Research Institute in Atlanta, Georgia, has developed a land mine detection system that sends seismic waves through a minefield, slightly moving the earth and items buried beneath. A noncontacting radar sensor measures the ground displacement to identify and locate plastic anti-personnel or antitank mines.

While the U.S. military is diligently building network centricity into the battlespace, the federal government is constructing virtual bridges between agencies and citizens on the home front. Cyberspace is now a two-way street where information is driven to the public, and citizens steer through the bureaucratic maze. Considerable advances already have been made, and plans on the drawing board promise to increase home-delivery of government services.

A new World Wide Web-based service allows emergency first responders to access government databases, conduct live online collaborative meetings and send encrypted e-mail in the event of a terrorist attack. Designed to serve a variety of user communities, the secure network service's home page provides links and information on terrorism, disaster mitigation and homeland security issues.

The U.S. Navy is using virtual reality to build better warships. By molding data into three-dimensional images with cutting-edge computer systems, engineers can identify potential trouble spots on a vessel's hull and share the information with other design teams around the country. Virtual imaging systems allow engineers to evaluate many different hull types before expensive model testing or full-scale trials occur.

After years of economic stagnation, the satellite industry could find that a turnaround is about to begin. Early returns point to a resurgence in interest and visibility for a weathered, yet optimistic, industry. Now more than ever, the government community recognizes that the commercial satellite industry plays an essential role in both international and homeland security. Several important occurrences in 2003 have set the stage for a turnaround.

A new approach to guided munitions may empower small warheads with the same targeting precision employed by larger glide bombs and missiles. The technology takes a low-cost approach to guidance that could improve precision for artillery rounds, mortar shells and grenades for as little as $100 per warhead. Mass-production ultimately could open up the technology for bullets at an even lower cost.

After years of searching for interoperability solutions for the multinational environment, this year the U.S. military will focus on how to ensure connectivity at home for coalitions comprising federal, state and local agencies. Using a familiar venue, the U.S. Defense Department will not only examine technical issues but also verify concepts of operations, concepts of employment and tactics, techniques and procedures. Event participants will be geographically dispersed and operationally diverse as they explore how network-centricity can support homeland security and defense.

Solutions to today's information security challenges may reside in the virtual world. Modeling, simulation and evolutionary computational techniques offer organizations a way to observe how real hackers operate and attack systems. Because tireless computers are doing all the work, data can be gathered around the clock ready for analysts to examine and evaluate.