Parallel Cutting 

Or (cross cutting) is the technique of alternating two or more scenes that often happen simultaneously but in different locations. If the scenes are simultaneous, they occasionally culminate in a single place, where the relevant parties confront each other.

In many cases the use of parallel cutting can create a sense of urgency or suspense. 

Look at the following clip and figure out how many different scenes are combined to make this sequence: (excuse the subtitles)