Shotguns as Communications Devices?

Video here… skip to about 55 seconds for the quote: “The LA51 is one of the Coast Guard’s new warning devices for communicating with civilian boaters…”

Just to make sure we all understand the spin, they’re saying that a flak-firing shotgun is a “communications device”.

You do know that the same type of cartridge (though much larger) is used to shoot down aircraft… right?