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Effective February 9, 2009, any pilots flying VFR within a 60-nautical-mile (110 km) radius centered on the ADIZ are required to complete training about the ADIZ. This training can be completed online through a course called "Navigating the New DC ADIZ" (now "DC Special Flight Rules Area"). [ 16 ]
The studio zone was formally first established in 1934, originally defined as a 6-mile (9.7 km) radius from Rossmore Avenue and 5th Street. By 1970, the center of the zone became Beverly and La Cienega boulevards in the Beverly Grove, Los Angeles neighborhood, the then-headquarters of the Association of Motion Picture and Television Producers ...
San Francisco is an extreme example: water makes up nearly 80% of its total area of 232 square miles (601 km 2). In many cases an incorporated place is geographically large because its municipal government has merged with the government of the surrounding county.
The most severe restrictions to the general public are imposed within a 20-mile (32 km) radius of the Green Bank Observatory. [5] The Observatory polices the area actively for devices emitting excessive electromagnetic radiation such as microwave ovens, Wi-Fi access points, and faulty electrical equipment and asks people to stop using such ...
The Nuclear Regulatory Commission defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of 10 miles (16 km), concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about 50 miles (80 km), concerned primarily with ingestion of food and liquid contaminated by radioactivity.
[citation needed] These checkpoints are located between 25 and 75 miles (40 and 121 km) of the Mexico–United States border along major U.S. highways; near the southern border of the contiguous United States. Their situation at interior locations allow them to deter illegal activities that may have bypassed official border crossings along the ...
John F. Kennedy came into office with a goal of improving the health of the nation as part of his New Frontier policy program. As President-elect, he wrote an article for Sports Illustrated, December 26, 1960, called "The Soft American" which warned that Americans were becoming unfit in a changing world where automation and increased leisure time replaced the benefits of exercise and hard work.
Efforts are under way to spur economic growth in South Bend. The St. Joe Valley Metronet is a 50-mile (80 km) dark fiber optic network that encircles South Bend and Mishawaka that allows for strong telecommunications connectivity. [75] The South Bend Metronet, named Zing, is bringing more high-tech firms to the city and surrounding area.