As a paramedic, administering a large amount of medications to patients is one of the few things that separates us from regular EMTs. We go through a very long program as well as countless hours of hospital clinical time and ride time on an ambulance to learn how and when to administer medications. Not to mention, everything we do is based off protocols that are written and signed off by a physician. Control substances are always kept monitored and checked every day. Also, if a particular call involves a combative, violent, or otherwise dangerous patient, the police department is always involved. The chance of a patient stealing controlled substances is and will always be there. It's just a matter of it being worth the risk to provide pain medications and sedatives to patients who need it.