Patent ID: 8702566

Claim:
A training device comprising: a housing comprising an opening, wherein said housing is operatively associated with at least one moving agency, a shut-off unit removably mated with the opening, a control mechanism operatively associated with the shut-off unit and a drive device said control mechanism enabling the drive device to cause the at least one moving agency to propel the training device when the shut-off unit is mated with the opening, and a first sensor operatively associated with the control mechanism, wherein the control mechanism is configured to enable the drive device to cause the at least one moving agency to: (1) stop propelling the training device when a distance between the first sensor and a second sensor falls below a predetermined separation value; (2) propel the training device away from the second sensor when a distance between the first sensor and the second sensor falls below a predetermined separation value; (3) stop propelling the device when the distance between the first and second sensors exceeds a predetermined separation value; and/or (4) propel the training device towards a second sensor when a distance between the first sensor and the second sensor exceeds a predetermined separation value.