A security apparatus for storing firearms adapted to be mounted within an enclosed area defined by a top wall, bottom wall, rear wall and one or more side walls. Along its length, each stud has a central web with transverse outer edge flanges and an intermediate transverse flange that defines with the outer edge flanges a separated pair of longitudinally extending lateral pockets on each side of the web. The confidence measure relates to the likelihood that a responsive record contains the information desired by a user. The originating MSC system then receives a repeat dialing instruction from the calling party and transmits a repeat dialing indicator to the terminating MSC system. A phase signal is created based on the rotational speed of the second input device.