Millions of Small Businesses on the Verge of Dying During Coronavirus

Small businesses in America are struggling to stay alive in the COVID-19 pandemic. In fact, a US Chamber of Commerce survey says 1 in 4 are two months away from closing for good and 1 in 10 are just a month away from shutting their doors permanently.

Who's most vulnerable? Businesses with 5 to 99 employees. The reason they're failing is simple: Cash flow has dried up completely.

CNBC takes an intimate look at a few of these businesses that appear to be taking their last breaths.