Sunny Sethi, founder of HEN Technologies , doesn’t sound like someone who’s disrupted an industry that has remained largely unchanged since the 1960s. His company builds fire nozzles — specifically, nozzles that it says increase suppression rates by up to 300% while conserving 67% of water. But Sethi is matter-of-fact about this achievement, more focused on what’s next than what’s already been done. And what’s next sounds a lot bigger than fire nozzles. His path to firefighting doesn’t follow a