The present invention relates to a vacuum arc discharge power supply. Minimum inhibitory concentrations were found for Escherichia coli, Staphylococcus aureus, Pseudomonsas aeruginosa, Streptococcus sanguinis, Salmonella enterica, Candida albicans, and Aspergillus brasiliensis. The multiple access priorities include the low access priority and at least one higher access priority. A release handle is mounted to a rear of the seat frame and is connected to the release mechanism for purposes of activating the release mechanism.