of continuing education (CE) hours is required to maintain certification. For example, to maintain NREMT certification, EMTs must obtain at least 48 hours of additional education and either complete a 24-hour refresher course or complete an additional 24 hours of CE that cover, on an hour by hour basis, the same topics as the refresher course would. Recertification for other levels follows a similar pattern. EMT training programs vary greatly in calendar length (number of days or months). For example, fast track programs are available for EMTs that are completed in two weeks by holding class for 8 to 12 hours a day for at least two weeks. Other training programs are months long, or up to two years for paramedics in associate degree programs. EMT training programs take place at numerous locations, such as universities, community colleges, technical schools, hospitals or EMS academies. Every state in the United States has an EMS lead agency or state office of emergency medical services that regulates and accredits EMT training programs. Most of these offices have web sites to provide information to the public and individuals who are interested in becoming an EMT. Medical direction In the United States, an EMT's actions in the field are governed by state regulations, local regulations, and by the policies of their EMS organization. The development of these policies are guided by a physician medical director, often with the advice of a medical advisory committee composed of paramedics and other health professionals. In California, for example, each county's local emergency medical service agency (LEMSA) issues a list of standard operating procedures or protocols, under the supervision of the California Emergency Medical Services Authority. These procedures often vary from county to county based on local needs, levels of training and clinical experiences. New York State has similar procedures, whereas a regional medical-advisory council (REMAC) determines protocols for one or more counties in a geographical section of the state. Treatments and procedures administered by paramedics fall under one of two categories, off-line medical orders (standing orders) and on-line medical orders. On-line medical orders refers to procedures that must be explicitly approved by a base hospital physician or registered nurse through voice communication (generally by phone or radio) and are generally rare or high risk procedures (e.g. vasopressor initiation). In addition, when multiple levels can perform the same procedure (e.g. AEMT-critical care and paramedics in New York), a procedure