The Bruins resumed play on Wednesday night amid tightened security at home against the Sabres.
The Yemeni authorities have tightened security measures at Sanaa's airport, as well as around several other embassies.
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Officials also have tightened security in schools by hiring extra guards to escort students to and from class.
One big worry today is that tightened security precautions could weaken the economy by hampering the transport of goods.
There will be tightened security at transportation facilities like airports and trains, with flight restrictions over certain cities like New York.
Genpact, one of India's largest outsourcers, with 25, 000 employees, has tightened security at offices in six cities, including one in midtown Mumbai.
Other cities, including New York and Washington, tightened security as a result.
The team was due to leave on Friday as police tightened security at government offices, nuclear power plants, airports and railway stations.
But they held this year's rally in Basra because of tightened security in the capital as it prepares to host an Arab summit, security officials told CNN.
After Pentagon officials revealed that cyber-spies had penetrated government servers in June 2007 and stolen untold amounts of sensitive data, government security agencies have tightened security of sensitive federal data.
Yahoo Japan, jointly owned by mobile firm Softbank and Yahoo, said it had tightened security measures in the wake of the attack and was investigating to ensure attackers could not repeat the theft.
The Mumbai police who were investigating the complaint were planning to set up a police post at Antilla, his 27 story residence and had meantime tightened security around it, in what is one of the toniest neighborhoods of South Mumbai. (Another notable billionaire resident in the area is Kumar Birla).
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Iraqi security forces tightened their security measures Saturday in and around Baghdad to protect pilgrims flocking to Imam Moussa al-Kadhim's shrine.
Brussels airport, the main shipment point for diamonds entering and leaving Antwerp, has since tightened its security for shipments of valuables.
After the incident at the San Jose mine, the Chilean government tightened mine security measures across the country, but injuries and deaths due to tunnel collapses and rockfalls remain a common problem.
Key sites in Washington DC and New York have also seen security tightened.
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Across the U.S., security was tightened at landmarks, government buildings, transit hubs and sporting events.
Last week, the UN Security Council tightened sanctions on North Korea for its illegal nuclear weapons.
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Security was tightened during check-in for Flight 415, which left on time and without incident, the officials said.
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Security was tightened across the entire complex, Associated Press news agency said, with dozens of police officers and armed soldiers on patrol.
Security Council tightened sanctions last week, raising the prospect the North could conduct another weapons' test or lash out against rival South Korea.
This week the UN Security Council tightened sanctions on Pyongyang for its botched rocket launch, which it says is a violation of a ban on ballistic missiles.
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Security was also tightened at sports venues nationwide, though most events were held as planned.
Security was also tightened at embassies, consulates and foreign offices of the Jewish Agency, officials said.
Security has been tightened at Sania Mirza's bungalow in the upmarket Banjara Hills area of Hyderabad.
However, there may be limits to what can be accomplished, as supply chains and security procedures are tightened.
Security will be tightened, and it will transform what had been a joyful and carefree experience into something else.
Security screening has tightened, as Congress debates how to revamp the system while attracting a higher-quality, better-trained work force.
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