Publicly traded since early August, aerospace and defense stock Firefly Aerospace Inc (NASDAQ:FLY) is plummeting to new lows -- down 20.9% at $29.24 at last glance -- after one of the company's rocket boosters exploded during preflight testing in Briggs, Texas. The seventh Alpha flight was intended to be a dedicated commercial launch occurring later this year, though it's likely delayed now. Firefly Aerospace stock was already sliding prior to today's bear gap, last seen on track for its fifth loss in the l ...