Other officials have suggested the explosive's "very, very sophisticated" nature suggest Reid did not act alone.
Scientists have long known that proteins and other molecules in the body don't act alone.
America can at least choose whether to act alone or to hide behind multilateral institutions.
Even though the names Lay and Skilling are forever associated with scandal, they did not act alone.
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But in a world in which threats are more diffuse, and missions more complex, America cannot act alone.
The Recovery Act alone is viewed by outside economists as having saved or created over 3 million jobs.
We want a world with more global cooperation where we act alone only when we absolutely have to.
It is simply not possible to find every plot beforehand, especially when the perpetrators act alone and on impulse.
That act alone would provide instant relief for beleaguered farmers, as commodities would jump up from artificially depressed levels.
It is not immediately clear whether or not the protesters were following orders or whether they decided to act alone.
The U.S. would prefer not to act alone, because that would play into Saddam Hussein's apparent strategy to divide the coalition.
The United States fears an open-ended military commitment and won't act alone.
That is, his article lends the impression that if Israel is willing to act boldly, it may not have to act alone.
But the president didn't criticise the way the US government works, although earlier in the day he did allow himself to say he wished he could act alone.
Now, it looks as though governments, as they scramble to find ways to protect their banks from failure following the crisis on Wall Street, are choosing to act alone.
Yet none of the publishers seemed to think that they could act alone, and if they presented a unified demand to Amazon they risked being charged with price-fixing and collusion.
Would we allow the Israelis - who are under no illusion that their country faces an existential threat from a nuclear-armed Iran - to act alone against a danger we may share?
While President Obama will sign 23 Executive Actions today that will help keep our kids safe, he was clear that he cannot and should not act alone: The most important changes depend on Congressional action.
But it does not act on them alone.
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It takes unusual leadership qualities to get European countries to agree to anything, let alone to act beyond their national interests.
When attached to the NEX-IFR5, the AXS-R5 can also act as a stand-alone playback unit for confidence monitoring and review through an on-board HD SDI 422 output.
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That alone seems like an act of common sense on Vizio's part: far too many tablet makers stick the speaker openings on the back side, which means unless you have the device propped up in a dock, the audio's bound to get a little muffled.
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The comfort of a patterned route is barred from you: you alone must write your next act, because no one can afford to hire you.
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The profession has less trust in your science than in NIH-sponsored studies and is less likely to act on results from trials you sponsor, let alone conduct.
There is little justification for more than a couple of Landesbanks, which act as wholesale banks for the savings banks, let alone the nine groups that exist.
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