The Columbia River Knife and Tool Hammond ABC Operator is, as its name implies ("All Bases Covered"), an attempt to be many things to many people.  Styled as a dive and rafting knife as well as an emergency blade and "tactical" piece, the Operator is a collaboration between CRKT and Knifemakers' Guild member Jim Hammond.

About eight and a half inches long with a four-inch blade and three-inch primary edge, the Operator also has an inch and a half of chisel-ground "Triple-Point™" serrations on its spine.  The primary edge is ground on both sides of the blade, which is made of polished AUS 8 stainless coated in black titanium nitride.  Handle scales are textured Zytel plastic held on with Torx fasteners.

My Operator, purchased from Self Defense Gear with the usual fast and friendly service,  was very sharp out of the box. It cuts well, though the tanto shape means it has no "belly" for slashing.  

The knife feels fairly good in the hand.  It has no guard, which will be an issue for some users, but the deep contours of the handle help mitigate this somewhat.  Those contours provide a natural index when drawing the knife in a forward grip.  The texture of the handle is pleasant but still feels a little more slippery than I would prefer.

The fully adjustable plastic sheath is yet another attempt to be many things at once.  There are screws to adjust the retention of the blade, screws to adjust the secondary panel that also bears the metal spring clip, and slots that provide a great deal of latitude in how that secondary panel is positioned.  The sheath can be attached vertically or horizontally (inverted or not)  to any number of straps or belts.  As pictured above, it can also be used out of the box for IWB carry.  The only drawback to all modes of carry is that the sheath, because of its design, is wider and thicker than it would be if intended for a single method of carry.

There's no doubt that this knife looks "tactical," which may or may not be what you want in a fixed-blade utility knife.  Its aggressive appearance aside, however, this is also a very versatile and relatively affordable knife that could serve in several capacities well.