Following the attack on Earth by the Xindi, Starfleet began outfitting a large number of its forces for war. Of this the NX War Cruisers were the most advanced. Equipped with an extensive weapons suite and advanced torpedo weapons, the NX War Cruisers were the centerpiece of the Terran's defensive line.
I opted to give the Terrans a 'photonic missile' instead of photon torpedoes as anything else would completely screw the previously accepted ship development for the Federation.
