Avon Protection's stealth ISI Viking ST SCBA system was designed by law enforcers for tactical officers, SWAT teams, correctional officers, and bomb squads dealing with high-risk situations. The Viking ST SCBA has critical, timesaving features, like the AirSwitch, built-in hands-free two-way radio communications and amplifier, and the two-point, pull forward head harness. The system is made to be lightweight and easy to use. Its all-black design and stealth mode ensure that your position won't be compromised.