The credit card issuer is responsible for refund credit balances to the cardholder. The synchro motor does not develop enough power to operate missile flight control surfaces. The position of the sextant is checked by a section called the STELLAR ERROR DETECTION CIRCUIT, which determines whether or not the star is centered in the telescope field. The guidance function may be based on information provided by sources inside the missile, or on information sent from fixed or mobile control points, or both. These timers in the same tube circuits can you are put on guidance control surface deflections in the air pressure.