Salvo; There is no shame in looking it up. It has nothing to do with spit, though the confusion is understandable. A Salvo is most general described as a discharge of multiple weapons at a single time. In proper context these weapons would be of a muzzleloader variety - either musket or cannon. Upon understanding the definition of the word Salvo the connection of this word to this graphic becomes obvious. Chrome Fog Free Hydra Dry Precision Optics Pro Lock Pro Shield Rubatone World Standard      * All world standard, meets or exceeds the following:DOT FM VSS 218 (US), ECE 22-05 (EURO PE), SAI AS1698 (AUSTR ALI A) & SG (JAPAN)SAFETY AND TESTING STANDARDS . does not ship with sai or sg certificationstickers unless purchased from an authorized dealer in that country.     * Fiberglass / Dyneema / Carbon Fiber Shell     * Long Oval Headform     * Wind Tunnel Tested And Refined     * Anti-Lift Visor To Reduce Glare     * Multiple Oversized Intake And Exhaust Ports     * Molded EPS Nose Reduces Shield Fogging     * Quick-Change Fog-Free Shield     * Fully Removable / Washable Hydradry Interior     * Rear Spoiler For Reduced Helmet Buffeting     * Removable Chin Curtain     * Reflective Graphics on Hi-Viz and Reflective Black Helmets