The evacuation zone was later extended to the 18-mile no-fly radius, within which residents were asked to leave or remain indoors.
Westchester County Airport in White Plains, N.Y., is exempt from the 25-mile no-fly radius in order to allow some private flights in and out of the New York region, said William Shumann, a spokesman for the Federal Aviation Administration.
The so-called theater missile defense is intended to protect the United States and its allies from incoming ballistic missiles flying within a radius of about 1,800 miles by detecting them with satellites and shooting them down with missiles.
The defensive formation was sorely tested in 1943, when, flying beyond the radius of the fighter escorts then available (less than 200 miles), U.S. bombers suffered losses too severe to be borne regularly.
In front of me, teenagers were sending orange safety cones flying in a decreasing-radius-turn exercise.
The Federal Aviation Administration has also implemented a no-fly zone, which bars anyone but law enforcement from flying within a 4-mile radius and 3500 feet above the ground in the protest area.
Some of the flowering trees will require pollination, which is where the bees come in, flying over a three-mile radius to keep newly planted trees blooming across the city.
Even the replacement referees tend to notice flying projectiles within a two-foot radius.
The FAA announced that any type of aircraft, including blimps and drones, are prohibited from flying within a "highly restricted," 10-mile radius surrounding the University of Phoenix Stadium.
To find customers willing to have their order handled by a flying robot, the companies surveyed households within a one-mile radius of the store from which they planned to deliver.
