Defense Experts™, what could be credible field expedient fill for these shells?
Defense Experts™, what could be credible field expedient fill for these shells?

streamable.com
"And it's empty - there's no TNT!" - Invaders received shells without explosives.

This is ridiculous - those are air burst shells. Clearly they would be filled with air.
The problem isn’t the shells, it’s a lack of crew training.
They didnt send a bicycle pump for them to put the air in though.