I don't understand this, can you elaborate?
The last, biggest export manufacturing business in the US is commercial jet manufacturing.
The orders in that space are all $1B or so, if not larger. In many cases, those deals are financed by the sovereign government backing the airline, since almost all countries have airlines, and need to be able to buy planes.
Boeing agrees to deliver aircraft to these airlines, because the government behind the airline guarantees the loan.
The cash coming in from deals made a couple of years ago, for planes delivered now, is the cash that keeps Boeing and its thousands of suppliers open.
If sovereign governments start defaulting on those payments, Boeing is going to have a cash problem, but it will be an extremely public one.
I think this is going to end up happening.