Describe about what is the “air cannon” equipment?

Have you ever used a manual fire extinguisher?  What circumstances brought you to the need to do so? Can you find anything in the Fire Codes (CBC, IBC or NFPA) that states where handheld (manual) extinguishers should be placed in various buildings?  (hint: they may have special cabinets or attachment requirements and may be placed at maximum distances along the egress path)  Please answer these questions.  Explain your experience and/or your findings with the class.

8.a. Equipment rated at 1200 A or more and more than six feet wide that contains overcurrent devices,switching devices, or control devices requires an entrance at each end of the working space. These doorsmust be at least what size?A. 36 inches wide; 9 feet highB. 24 inches wide; 6 ½ feet highC. 24 inches wide; 8 ½ feet highD. 36 inches wide; 6 feet high8.b. Two requirements related to working space for equipment rated over 600 V include the presence ofwarning signs indicating high voltage and minimum front-working space distances. What's an additionalrequirement?A. All access must be a door, and it must be at least 60 inches wideB. The working space also may be used for storageC. Four feet minimum depth of clear working space for Condition 2 installationsD. Equipment that's effectively separated from equipment of lower voltage

What are the possible benefits on a target market of a Smart Cstruction Vest?