The US's EMP commission's report explained that to defend against such an attack, it is necessary to build redundant electrical systems and have difficult-to-build replacement parts like turbines on hand to replace ones destroyed by such an attack.
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The airline has been attempting to contract with outside carriers to boost its schedule, but charters have been difficult to schedule this late into the holiday weekend.
Central to this project are advanced MRI scanning techniques, which the scientists say are able to pick up on details of the growing brain that have been difficult to capture until now.
BBC: Babies' brains to be mapped in the womb and after birth
Sometimes we have difficult issues to work through with them, but it remains an important relationship.
Just a couple of years ago, that number would have been difficult to achieve.
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Mr Penny said that it would have been difficult to incorporate the signals into a homemade bomb.
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Mr Buffett has made his billions from long-term bets that Wall Streeters would have found difficult to leave alone.
The level of devastation seen would have been difficult to achieve by conventional shelling, the BBC's Jim Muir in Beirut says.
This has clearly been a year for sticking with the weekly trend analysis, as the short-term swings have been difficult to trade.
Such returns have proved difficult to maintain in the recent economic climate.
For the time being, production methods have proved difficult to scale up.
So even if Vale had found a target for a huge, transforming deal, Brazil's government, like Norway's footballers in 1998, would have proved difficult to beat.
"In the past, it may have been difficult to become rich, but theoretically anyone could do it, whereas it seemed more unrealistic to even think about fame, " he says.
While I believe we had a strong case on the merits, enforcing and collecting on any judgment against those entities in India would have been difficult to say the least.
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But its judgment should not stand in for the considerations that get made in the real world, where doctors and patients have to balance difficult issues to arrive and the right decisions.
However, results for Erbitux have been difficult to read--it's not clear that ImClone and its partner, Bristol-Myers Squibb (nyse: BMY - news - people ), conducted the right clinical trials.
The whales, known also as belugas, dived regularly to the bottom of Storfjorden, off the east coast of the main island of Spitsbergen, reaching areas it would have been difficult to monitor from a ship.
Had these events occurred further apart, they would have ultimately balanced out the same way, but they could have created either a decline in earnings growth or an increase that would have been difficult to exceed in the following year.
"After a great deal of soul searching I have come to the difficult decision that I have no choice but to draw a close to the current production of my first play, " Davidson wrote.
We have got to succeed, but we have to understand how difficult and complicated the issues are and that we need to be patient as well.
It would have been difficult for him to have chosen two heirs apparent more like himself.
Researchers using computer models have found it difficult to simulate a global climate fitting these conditions, and have also suggested a hotter world as a whole.
Windy spots tend to be beauty spots, and complaints from residents have made it difficult to build turbines.
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In seeking to match buyers and sellers in large transactions that have historically proven difficult to execute on the traditional exchanges, the Zanbato Sutter ATS hopes to facilitate the sharing of investment opportunities between, on the one hand, governmental agencies, corporations and financial advisors, and, on the other hand, a network of qualified institutional investors.
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If Mannkind stumbles again Mann may have to make the difficult decision to liquidate parts of this portfolio, something he wasn't willing to do to keep either his philanthropy or airplane company going.
But a growing body of evidence suggests that her basic points are right: children of divorce are more likely to have problems at school, to drop out of education and to have difficult relationships than those who lose a parent through death or whose parents' marriage survives.
Some at Le Bourget have found it difficult to understand why the U.S. has scaled back when the global industry could have done with their presence.
Isner may have found it difficult to shake off the "marathon man" tag but there are some other things that have stuck with him by his own choosing -- like his love for wrestling.
Mr Blair would not only have to deliver his cabinet and Parliament but, more difficult, would have to win a referendum on the subject.
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