limit | definition: the greatest possible degree of something | synonyms: uttermost, absoluteness, utmost, level best, knife-edge, utterness, bound, thermal barrier, maximum, extent, boundary, starkness, verge, heat barrier, brink
An EMT-Paramedic training program is required to attain the highest level of emergency medical technician training. Such programs generally require a high school diploma for entry. A variety of training programs are available through community colleges, hospitals and fire departments.
As for paramedic training, it takes from 1.5-2 years and you should be an EMT for at least 2 years before beginning the course. Once you are certified/licensed, you can work on the road in an ambulance, in a hospital (typically emergency department) setting, or get your fire certs and work for a fire department.