Noun
fire mission (plural fire missions)
(military) A communication between the fire direction center (FDC) and an observer to direct artillery on a target.
Here's my definition of a great beach read - a fabulous story that sucks me in like a black hole and when it's over, it jettisons my bones across the galaxy with a hair on fire mission to convince everyone I know that they must read that book or they will die. Dorothea Benton Frank