Non-Standard Mission
Normally when a MLRS unit is required to handle more than one tactical mission.
When MLRS is the only weapon system available.
Aviation brigade, Marine Corps.
Notes:
Title: Non-Standard Mission
Dialogue: If the commander's intent cannot be satisfied by assigning the MLRS battalion one of the four standard tactical missions, he may assign a non-standard tactical mission. He does this by amplifying, limiting, or changing one or more of the seven inherent responsibilities or spelling out contingencies not covered by them.