Rebel ships and hand blasters fire red bolts, while Imperial ships fire green bolts. Blasters may either shoot killing red bolts, which may neatly puncture stormtrooper armor and human bodies, or alternately blue expanding rings on a stun setting, which - although painful - seems harmless in the long run. Lightsabers are also seen; this may deflect blaster bolts or slice objects, and are associated in the movie with the complete material disappearance of Obi-Wan Kenobi. This material disappearance, though puzzling, may not be due to the lightsaber, but a Force phenomenon. The Death Star is a superweapon that is capable of destroying a planet with one shot from its enormous beam. Roughly analagous to a Proton torpedos are small and fairly maneuverable missiles; fighter pilots prefer to use their lasers over these. The laser strike of a fighter against hull may produce an explosive white flash; they may also cause damage or directly destroy other fighters. A glancing hit with a TIE fighter weapon on R2D2 produced relatively little damage - in appearance, little different from damage caused by blaster rifles.	SDN: Flash seen in this article requires >60 GJ firepower for fighters. ST-v-SW: Flash is a secondary explosion, not superheated hull.