Public Relations Expert Kris Ruby to lead a special training for Propellant Labs: The Power of PR For Your Startup. Propellant Labs is a global launchpad for startups. The online community of entrepreneurs and investors helps entrepreneurs build, launch and grow their ventures. Startups participate in remote demo days with Silicon Valley and Southern California investors. Ruby will speak to over 35 Founders of the incubator cohort on how to leverage media exposure to build your business.