I think you've made a good point bumpylady about people starting to panic once the professionals arrive to take over. Whilst I can appreciate that panicking relatives are a complete nightmare for ambulance crews, to joe public the event we're witnessing may be very scary for us and something we've not seen before - and if the patient is your child then the fear is 1000 fold. I've called an ambulance twice in my life (never for my child) and was very calm and in control until they arrived. Once I was no longer needed I fell to pieces. For someone who would only call an ambulance when genuinely needed, it's a terrifying experience and maybe you could bear that in mind when judging panicking parents. The call might be mundane to you, but to that parent someone far more precious than themselves is injured / unwell and NOTHING is more important to them.