besti6868A without a doubt. Only medical MOS where you can become a warrant. They also offer a Training with Industry program for active duty. You will work with a company for a year gettingCCFREELIFE 150ct .68 Caliber Aluminum Balls, 68 Caliber Self Defense Balls for Byrna SDLEMAX, for Salt Supply s2, 7.3g, Reusable, Ideal for Self Defense and Practice