Even so, constant vigilance was necessary at that low level.

Constant vigilance and paper trails are only part of the answer.

It takes constant vigilance to keep both as a priority.

For him, on the other hand, constant vigilance was a necessity.

Constant vigilance is required on the part of the tenants.

Keeping their knowledge hidden was going to take constant vigilance.

The two young boys enjoyed this private peace away from the constant vigilance of Mother.

With constant vigilance, we might be able to hold things together at warp three.

In sum, say these experts, it comes down to constant vigilance.

And it would be impossible to provide constant vigilance at future exhibitions.