In a radiation therapy and magnetic resonance unit, a magnetic resonance diagnosis part is provided. The visual interactive response system executes the translated visual-based script when a user using a display telephone calls the visual interactive response system. Pre-treating the lithium electrode with SO2 gas prior to battery assembly prevented cell polarization. In a further aspect of the present invention, an adjustable tensioning device is employed. The device generally comprises a module having inflatable buoyancy chambers that allow the module to hover at a desired water depth, at least one acoustic array to detect the underwater target, a propulsor system for orienting the module with respect to the underwater target, and a gun for firing one or more projectiles at the underwater target.