Obviously, with the President in residence today, we want to be especially careful.

Or it would make them especially careful and I wouldn't be able to find him through her.

"We have to be especially careful," he reminded no one in particular.

"I'll have a talk with Tucker, tell him to be especially careful."

Be especially careful if you attempt a proof of these ideas.

As a result, pilots must be especially careful during those times.

Be especially careful when you exercise or during hot weather.

If you park in the city centre at night, be especially careful.

Be especially careful to follow your doctor's instructions on their use.

Thus their activities may easily cross legal lines if they are not especially careful.