1. A method of determining a trajectory of an object during a procedure, comprising: tracking a three-dimensional position of the object with a tracking system; storing a first location of the object based on a first tracked location of the object with the tracking system; executing instructions with a computer processor to determine a second location of the object based on a second tracked location of the object with the tracking system; generating a first representation of the object at the first location; generating a second representation of the object at the second location; and displaying on a display simultaneously both the first representation of the object at the first location and the second representation of the object at the second location.