"dirty", and slow, pose another significant hazard. Also, since the slow-moving PPC, like a helicopter, is particularly well equipped to fly safely near the ground, special care must be taken to avoid power lines, trees, and other low-level terrain obstacles. Operations PPC pilots typically enjoy flying low and slow, and the PPC is an excellent platform for sightseeing and photography. PPCs are also used in agriculture, and occasionally by law enforcement agencies and flight search organizations. PPCs do not need an airport to take off and land. Many pilots choose and prefer to fly from back yard strips, small airports, and mowed hay fields. In the United States, Part 103 ultralight PPCs (like other classes of ultralight aircraft) are not allowed to fly at night, and not over densely populated areas. However, the FAA implemented the sport pilot rule in 2004, which expanded the areas over and airspace in which light sport aircraft (LSA) PPCs can legally fly. In fact, a properly equipped PPC may even be flown at night or over metropolitan areas by a private pilot with a PPC rating. Uses Law enforcement Powered parachutes have operated in an observation platform role by police departments, and have assisted with suspect captures, river rescues, critical infrastructure over-flights, crime scene photos, narcotics enforcement and crime suppression, at a small fraction of the cost of a police helicopter. In one case, this low-cost aviation asset was procured from the U.S. Department of Justice, Aviation Technology Program. Emergency medical services The I-Fly Maverick is a street-legal experimental certified aircraft designed to provide emergency medical services to the Huaorani indigenous people in the Amazon rainforest in Ecuador. Hunting and scouting It is generally illegal in the U.S. to actually hunt/shoot from any aircraft, except in very limited certain circumstances. However, a PPC is considered an ideal aircraft for initially scouting animal and herd locations in the days or weeks prior to a hunting season, due to its naturally slower flight characteristics. During hunting season, most U.S. states have strict rules about mandatory waiting periods between the time a hunter uses an aircraft and can actually hunt, and virtually all have restrictions and serious penalties for the use of any aircraft to hunt in real-time (e.g., air-to-ground collaboration/communications). With outright bans by many states disallowing UAV use in any situation related to hunting and wildlife harassment, PPCs are considered by some to be a