Knights Errant Investigations started out with dozens of types of ground and air vehicles. Most of them were retrofitted civilian or military surplus vehicles, but K.E.I. commissioned new designs over the years and decades that followed. They contracted the construction of their own spacecraft in time, and then even starships after Contact. The modern official Knights Errant starship is a modified version of the venerable Hammond-class frigate. They didn’t have anything to do with the original construction, but hired the factory to continue building their version after the American Navy began building newer frigates. The Hammonds have become their symbol in the time since, and whenever you see a Hammond, you can bet you’ll see a Knight Errant nearby. Unless he doesn’t want you to see him of course. But if that’s the case, you’ll probably see him soon anyways.