When Tom and Jimmy respond to the car accident, Jimmy shocks one of the victims with a defibrillator but doesn't press the "shock" buttons on the paddles.
In the scene where they're taking a boy who was in critical condition to the hospital. Tom is in the back with the boy and Jimmy is driving. In real life situations, Jimmy who is a Paramedic should have been in the back, being it was a Advance Life Support situation. Tom who is a E.M.T-Basic should have been driving.