Herndon, Va.-based cybersecurity startup accelerator Mach37 has unveiled the five companies chosen for its fall cohort. The startups will get $50,000 investment and spend 90 days in intensive programming where mentors will help them learn how to get their products to a market-ready point, teach them how to attract private investors and prepare for scaling up their companies. The program also serves to connect the startups with some of the very people who might be the potential investors.