For further information, contact: Amos Deacon, (800) 203-4800 amos@atvcorp.com For Immediate Release ATV CORP INTRODUCES A NEW 'PROWLER': PROWLER II SIDE-BY-SIDE LIGHT TACTICAL WHEELED VEHICLE TAMPA, FLA, May11, 2004 -- All Terrain Vehicle (ATV) Corporation today unveiled the Side-by-Side version of its Prowler ITV (Internally Transportable Vehicle) Light Tactical Wheeled Vehicle. The new Prowler II Side-by-Side Tactical/Assault Platform was introduced at USSOCOM's Advance Planning Briefing. The Prowler II Side-by-Side Tactical/Assault platform was designed to satisfy the military's need for a vehicle with the same general physical dimension as the Prowler ITV but able to handle more payload and crew. Prowler II features the same characteristics as the Prowler ITV: exceptional reliability, stability, rugged endurance, speed, power, and unique operator protection. Like the Prowler ITV, the Prowler II is multi-mission configurable and easily deployed to operate easily in any terrain or climate. The Prowler II is purpose built, like the Prowler ITV, to overcome the severe limitations of generic ATVs regarding operator safety, vehicle reliability, rugged endurance and operator control. The Prowler is not a recreational ATV modified for military use. For example, the Prowler is designed so that it can be operated with one hand and driven like a car. This contrasts with an ATV, which requires the operator to straddle the machine, steer with handlebars, use both hands to control brakes and throttle, and use his body to maintain stability. ATV Corporation is a subsidiary of Phoenix International Systems, Inc. (Orange, CA), an ISO 9001:2000 certified SDVOSB that has been supplying state of the art COTS products in support of military operations since 1993. # # #