The number of threats escalated until dozens were coming in by week's end.

"That means my numbers will escalate even higher."

But the number of mergers has escalated rapidly, and the vast majority are still approved without controversy.

They continued marching, and the number of dead soldiers escalated.

The number of these emergencies escalated and became a challenge.

By that time, the number of Butterflies had escalated to three pairs.

The number of official flood watches and warnings escalated rapidly in the days that followed.

A number of events dramatically escalated the conflict in late 1920.

That's one of the primary reasons the number of free agents has escalated.

The number of paintball shots greatly escalated after the work was reported on Digg.com.