The problem, as he explained it, is that the airspace for each of the three airports extends cylindrically into the sky above its ground position.
When police arrived around noon, the teenager was gone and Portillo was laying on the ground in the fetal position.
The position on the ground is a lot more stable than anyone could have predicted.
Today, Bhutto seems to have significantly shifted her ground and publicly hardened her position.
FedEx now has a leading position in the ground parcel-delivery business, especially in America.
We are a nation that stands on high moral ground and are in the position to help others have the same.
Thus, a spy plane could not be completely invisible if it were to be used for espionage or, indeed, flown at all, since its pilots would need to know its position relative to the ground.
Contemporary records and an initial geophysical scan of the ground was used to identify the exact position of the house.
Devendra Raj Pandey, an economist asked to chair an independent committee supervising disarmament, declined the position on the not unreasonable ground that it was not his area of expertise.
The Olympic Stadium will have 80, 000 seats when the games comes to London, and though that number will probably be reduced after the Games, Lord's could lose its position as the biggest cricket ground in the country.
"It's up to the people in Weston to stand their ground and not allow North Somerset Council to bully us into a position where it's knocked down, " said Derek Mead, chairman of Trop (WsM).
But there is enough common ground, especially if each side is willing to move off its starting position, to achieve significant deficit reduction.
Asked whether further troop reductions could resume after the pause, Petraeus repeated his position that future troop levels be based on conditions on the ground.
But whilst you're not in as controlled an environment as you'd like to be, you are in a position to have a major impact for the troops on the ground.
If we ignore or discount their interests simply on the ground that they are not members of our species, the logic of our position is similar to that of the most blatant racists of sexists - those who think that to be white, or male, is to be inherently superior in moral status, irrespective of other characteristics or qualities.
Similarly, nobody today would question a position in technology stocks, but it took Phil Fisher to break that ground in a painstaking, multi-decade way.
The turret does not rotate a full 360 degrees, so in ground-to-ground combat trying to manoeuvre the long-bodied Walrus around to get a firing position can prove frustrating.
As a result the Liberal Democrats face a choice between contesting the middle ground against opponents with heavier artillery, or trying to establish a new and more defensible position on their flanks.
Present CEO Bob Calleja will stay at the club and take on the position of chief operating officer, focusing on how to develop the club's ground.
But a fatal accident inquiry which heard evidence of the position in which the bodies were found, determined all of the victims had been leaving the ground.
And we've been coordinating with the United Nations, which now has a number of personnel on the ground as well, to make sure that people are getting the help they need and we are in a position to respond to any additional emergencies that may arise out of the situation there.
WHITEHOUSE: President Obama and Prime Minister Gillard of Australia
Perhaps unaware that Dhoni had put one of his best fielders, Murali Vijay, in that position - where he replaced the less mobile Amit Mishra - Hayden was about six inches short of his ground when Vijay's throw ripped out a stump.
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