The more internal air volume available, the better and deeper the bass can become.
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Among the most dramatic of Bush's proposals is a fee that the Federal Aviation Administration would charge airlines to help pay for new air traffic control services, which are becoming strained by an increasing volume of air traffic.
The administration's funding authorization expires Sept. 30, and it needs more money to address the booming volume of air traffic, primarily because the air traffic control system needs safety and security upgrades.
Pumping up foods with air also works to increase volume and promote satiety.
UPS' next-day air and "deferred delivery" volume still trails that of FedEx, but is gaining.
That said, the 2% by volume that goes by air accounts for around 35% of the value: light, expensive goods such as high-end electronic components tend to be flown.
The building was frequently modified over the years to accommodate the growing volume of travelers and changes in air travel.
For some airlines, longer scheduled times for flights reflects the reality of inefficiency in the nation's air travel system, which often can't handle the volume of planes without delay, especially when bad weather hits.
Air traffic was growing, and the air traffic control (ATC) system couldn't handle the swelling volume.
In August, Hactl, which handles about 80% of air cargo from Hong Kong, posted its fourth consecutive month of decline in volume.
Air cargo planes are believed to receive less attention than passenger planes because of the sheer volume of freight passing through.
Since 2000, reports the Air Transport Association of America, there's been a 21% drop in passenger volume for flights of 500 miles or less.
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