Small snubfighters like the Alliance
X-wing and
Y-wing starfighter often have their laser weaponry complemented by ordnance launchers capable of firing proton torpedoes. The energized torpedoes carry a devastatingly powerful blast, and can be fired at much greater ranges than the standard laser cannon. During the Rebel attack run on the
Death Star, Alliance fighters had to use high-speed proton torpedoes on the thermal exhaust port that protected the Death Star's sole vulnerable point. Since the port was ray-shielded, standard laser weaponry would be ineffective.