Cyber Defense, Techsphere, Sierra Nevada and 21st Century Test SA 60 for Future Disaster Relief Efforts.

ST. PETERSBURG, Fla. -- Cyber Defense Systems, Inc. (OTCBB: CYDF), a designer and developer of next generation unmanned aerial vehicles (UAV's) and an operating subsidiary of Proxity, Inc. (Pink Sheets: PRXT), today announced a successful test launch of the revised multi engine SA 60. Cyber Defense Systems, Inc. (Cyber), Techsphere Systems International (TSI), Sierra Nevada Corporation (SNC), and 21st Century Airships (21st Century), the developers of this technology, successfully flew the next generation four engine SA 60. The airship was put through a series of in-flight maneuvers testing the flight characteristics of this unique new system. The companies demonstrated the SA 60 in Toronto, Canada from the 11th of September through the 16th. The SA 60 has already broken the world's high altitude record set in 2003 and utilizing airships as a communications platform is the next achievable milestone for the team. Tests with various developmental communications technologies have shown systems could be quickly installed on the TSI airship line and could be used to provide emergency communications systems that could be deployed to disaster areas.

The recent Hurricane Katrina in the Gulf Coast demonstrates the need for a quickly deployed communications system to both coordinate rescue and security operations. After testing some of the communications packages the team plans to utilize these technologies on current airships for future deployment, such as the recent Gulf coast disaster. "Cyber, TSI, SNC and 21st Century are excited to demonstrate airship and communications improvements that could be utilized in the future," commented Cyber CEO Billy Robinson. "As additional uses of our airships are recognized the vast array of benefits in many different markets will be further reinforced."

"A state of the art wireless communications systems such as the Tacticomp(TM) recently developed by SNC will allow for immediate audio and visual communications on the SA 60. We believe this system along with some recently developed global communications systems will provide the airship team with a unique system that will save lives as well as provide immediate communications capabilities in disaster situations," said Mike Lawson President of TSI.

According to Jon Burgoyne, SNC's Executive Vice President, "The natural disaster caused by Hurricane Katrina left New Orleans and much of the Gulf Coast region without communications infrastructure to support relief operations. Destruction of cell phone towers, first responder tactical radio repeaters and power disruptions created a communications vacuum that severely hindered search and rescue operations. Our team's airship provides an ideal platform for hosting a combination of tailor-made payload suites for overcoming this type of communications infrastructure loss."

About Cyber Defense Systems:

Cyber Defense Systems, Inc. is designing and building a new generation of UAV's. Cyber Defense also has the global government and military marketing rights to airships manufactured by Techsphere Systems International. Cyber Defense is currently marketing the airships and their CyberBug(TM) UAV's to various branches of the U.S. government and U.S. allies as multi-use platform vehicles capable of deployment in surveillance and communication operations. http://www.cduav.com

Cyber Defense Systems, Inc. (OTCBB: CYDF) is an operating subsidiary of Proxity, Inc. (Pink Sheets: PRXT).

About Proxity:

Proxity, Inc. is a developmental holding company specializing in the deployment and marketing of security protection technology and government contract fulfillment. With 18,750,000 shares in CYDF, Proxity is the Company's majority shareholder. Proxity seeks to acquire and develop security and marketing technology. The Company plans to enter into teaming and exclusive and nonexclusive marketing and distribution agreements with products developed for government contracting, internet, commercial, military and homeland defense. http://www.proxity.com.

About Techsphere Systems International:

Techsphere Systems International, located in Atlanta and Columbus, GA, is the licensed manufacturer of airships developed by 21st Century Airships Inc. Together with their teaming companies, Techsphere will design and build unique airship platforms for use in many areas including surveillance, the military and wireless communications. The current spherical airship design holds the world altitude record at over 20,000 feet. http://www.techsphere.us

About 21st Century Airships Inc.

21st Century Airships Inc., located in Newmarket, Ontario, Canada is a Research and Development company for lighter-than-air crafts. Founded in 1988, its objective is to improve traditional airship technology and develop modern airships for various applications. The company's R&D activities have resulted in a considerable number of significant inventions and patents. http://www.21stcenturyairships.com

About Sierra Nevada Corporation

Sierra Nevada Corporation (SNC) is a fast-growing research, development and manufacturing company that provides leading edge Intelligence, Surveillance, Reconnaissance and Network-centric communications technologies on multiple platforms ranging from soldier-based to small and large manned/unmanned aircraft. SNC also specializes in the design and production of defense electronics products in the fields of Instrumentation, Test and Training (ITT), Electronic Warfare (EW), Air Traffic Control and Automatic Landing Systems (ATCALS), Unmanned Air Vehicles (UAVs) and Command, Control, Communications, Computers, Networking (C4N). SNC is a $300M+ company with a corporate office based in Reno, Nevada and does business with all branches of the U.S. DoD, as well as with certain Government agencies. Sierra Nevada Corporation owns the SA-60 Airship that flew for the recent Navy test flights and holds the exclusive integration contract rights for government end users of Techsphere's airships. http://www.sncorp.com

This release contains statements that constitute forward-looking statements. These statements appear in a number of places in this release and include all statements that are not statements of historical fact regarding the intent, belief or current expectations of the Company, its directors or its officers with respect to, among other things: (i) the Company's financing plans; (ii) trends affecting the Company's financial condition or results of operations; (iii) the Company's growth strategy and operating strategy; and (iv) the declaration and payment of dividends. The words "may," "would," "will," "expect," "estimate," "anticipate," "believe," "intend," and similar expressions and variations thereof are intended to identify forward-looking statements. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, many of which are beyond the Company's ability to control and those actual results may differ materially from those projected in the forward-looking statements as a result of various factors.