If the Boeing 737 MAX doesn't get certified to fly again I think there's a stockpile of airplanes that could be re-tooled for military operations. Some ideas come in mind
There are some companies trying to use airliners as orbital deployer platforms for small satellites.
I personally doubt the 737 MAX will not be certified but I also doubt that FAA will not require pilot training. That maybe reason for some (but few airlines to cancel their contracts). But you should take my statement with a grain of salt.
* flying tankers * airborne radars * electronic intelligence platforms * naval patrol platforms
There are some companies trying to use airliners as orbital deployer platforms for small satellites.
I personally doubt the 737 MAX will not be certified but I also doubt that FAA will not require pilot training. That maybe reason for some (but few airlines to cancel their contracts). But you should take my statement with a grain of salt.