My condolences, very sorry for your loss. I work as an EMT (911) and resourcing is certainly a problem. In my small city, our response time is around 5 minutes, and if we need to upgrade to get paramedics, that’s maybe another 5-10. However, if we are out on a call, out of service, or the neighboring city is on a call, now the next closest unit is 15+ minutes away.. sometimes there can just be bad luck in that nearby…
For the goals -- and this may differ between EMT / paramedic & protocols -- but I would really wish that there was a blood draw done in the field. Before they bring you to the cath lab with a suspected MI, the ER is likely going to draw blood to get troponin levels at a 2-hour interval. You could save some time & heart muscle by getting a blood sample (containing initial levels) in the field.