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This datapack adds the ability to call fire support, like HE, Smoke and incendiary. It was primarly created for server owners
/function cbcfiresupport:give/he_support
/function cbcfiresupport:give/smoke_support
/function cbcfiresupport:give/incendiary_support
After that, look at the location where you want to call a fire support and use item, and after some time fire support will hit the target
/scoreboard players set #disableSound cbcfiresupport 1
Change cooldown on calling fire support (in seconds)
/scoreboard players set #cd cbcfiresupport ...
Video:

This datapack/mod adds the ability to call fire support