Make sure the rookie EMT knows that a med patch is a radio term, and not a medicated bandage. But it's EMT skills that save Paramedics. When a patient vomits outside, be sure to aim it at the citizens that wouldn't back up. Never trust your rig, drug box, or airway bag to be fully stocked. In spite of the assurances of the off-going crew.
Newbies always look for large things in small compartments and vice versa.
There is no such thing as a bad call. Only calls that didn't go the way you planned. If there are no drunks at an MVA after midnight, keep looking, someone is missing. Just because you are paranoid does not mean that the supervisor isn't around the corner. Just because someone's license date is before yours does not mean they know what they are doing.