Letter to the Editor—Expected Coverage of a Circular Target by Bombs all Aimed at the Center

The exact mathematical formulation is given for the expected proportional coverage of a circular target from n weapons all aimed at the center of the target, for arbitrary n. It is assumed that the weapons fall in a circular normal distribution and that the lethal area of each weapon is a circle of specified radius (cookie-cutter lethality function). Typical pages are given from a set of tables. The tables were computed on an IBM 7030 (STRETCH) computer.