This article reviews the folding and fixed blade knives, opening and locking mechanisms, blade types, points and bevels, and aesthetics and uniformed presence. Folding blades are defined as any sharpened, single, or double-edged blade that can be folded, coiled, twisted, bent, or otherwise secured in a folded position. Fixed blades are any sharpened, single, or double-edged blades secured to an immovable handle, the entirety of which has no moving parts. A fixed blade as opposed to a folding knife would better serve any special unit personnel. Fixed blades are sturdier and can withstand the rigors placed upon them such as carving out a hide for a sniper position. There are many opening mechanisms available for selection. Some blades are enabled via manipulation of an opening mechanism using the thumb such as a hole, a stud, or a T-post. Mechanically operated folding knives are generally available with spine/back or ridge-lock, liner-lock, slide-lock, or bolt-lock securing systems. All are adequate, but the locking mechanism is the weakest link in the chain of operation for any folding knife. This is what makes the fixed blade superior to the folding blade. The generally preferred blade type by first responders, emergency, and rescue personnel is the “sheep’s hoof” style. With the tip rounded and the backside completely dull it takes away the potential to stab and is probably more of a utility tool. Practical application and officer preference should dictate blade type. There are many blade shapes, thickness levels, and bevels. The advantages and disadvantages of these features of a knife are again determined by its intended function. Finally, there is the issue of personal aesthetics. There are a number of blade finishes, colors, and handle materials. Acquiring the best kind of knife is made easier by understanding the elements of a knife and the tasks that it needs to perform.