1.   Austin-area school officials said classes are on for today, as are plans for heightened vigilance at campuses.

2.   But the heightened vigilance is also stifling what some Cubans say is their only way to make ends meet.

3.   In both cases no attack followed and federal officials suggested that heightened vigilance might have helped foil planned attacks.

4.   Increased flights and heightened vigilance may account for the rise in problems detected with hazardous material, acknowledged transportation department spokeswoman Patricia Klinger.

5.   Since then, increased drug testing by Chinese officials and the international swimming federation has resulted in a heightened vigilance regarding banned, performance-enhancing substances.

6.   The police had been on high alert since before a suicide bombing on Tuesday, but the heightened vigilance proved ineffectual in both attacks.

7.   The result is a sort of heightened communal vigilance for the latest flare spots, and a general impatience for the police to get things under control.

8.   The situation certainly called for heightened vigilance.

9.   Financial measures were pledged as well, including heightened vigilance over bank accounts and money transfers, and cracking down on drug and arms trafficking, and money laundering.

10.   Given that six months passed between the first fatal case of the disease and the second in Hong Kong, the WHO virus experts urged heightened vigilance worldwide.