Complex sentence: The initial training begins with SRF-B (Security Reaction Force Basic), then follows SRF-A (Security Reaction Force Advanced), which includes OC spray (Oleoresin Capsicum- "pepper spray").
Split into simpler sentences: The initial training begins with SRF-B (Security Reaction Force Basic). Then follows SRF-A (Security Reaction Force Advanced), which includes OC spray (Oleoresin Capsicum- "pepper spray").