The maneuver is performed by five light spacecraft flying in a circular formation, following with them crossing within ten meters of each other and flying off in the opposite direction, igniting their plasma trails as they make the crossover. When done successfully, the maneuver creates a spectacular light pattern resembling a star.
The maneuver was banned at Starfleet Academy since the 2260s following an accident in which all five cadets attempting to perform the maneuver were killed. However, in 2368, Nova Squadron (an elite group of cadets that included Wesley Crusher) conspired to perform it at the end of squad leader Nicholas Locarno's final academic year. In the clandestine practice, Joshua Albert lost control of his craft and caused a similar collision that killed him and destroyed all the remaining craft (all now evacuated via emergency transporter). (TNG: "The First Duty")