death blossom
n.— «The Group’s training includes weapons discipline, as the Iraqis are known for firing their weapons liberally when attacked. The Iraqis typically fire their weapons in all direction, in what is known as the “death blossom.”» —“Iraqi police ‘soft targets’ as US attempts to train for takeover” by Bill Roggio The Raw Story (Washington, D.C.) Dec. 13, 2006. (source: Double-Tongued Dictionary)
This term is also in the movie “The Last Starfighter” when the space ship spins and shoots its weapons in all directions.