The Buck 655 Nighthawk owes its heritage to Buck's experience of making knives for the U.S. military. Fixed-blade knives are the most durable and reliable for hard use in demanding situations and the Nighthawk was designed with this type of mission in mind. Based on Buck's long time line of Nighthawks, this is a serious tactical knife made to withstand the rigors of extreme activities, harsh conditions and extended exposure to the elements. Buck engineers worked diligently to make this a knife that won't tire you out under prolonged use. When survival is part of the equation, this is the knife to have at your side.