1. A method comprising: receiving a selection of a pixel in an x-ray image of a concealed target, the x-ray image generated by a backscatter x-ray scanning system, a location of the pixel in the x-ray image corresponding to an output vector over which an x-ray source in the backscatter x-ray scanning system transmits collimated x-rays; and responsive to receiving the selection of the pixel in the x-ray image, generating a signal that causes an angle motor to position a tool such that a directional axis of the tool is coincident with the output vector.