Watch the correct sector depending on your position in a formation moving down a street where:
- The front man watches "front"
- The second man watches "inside"
- The third man watches "across"
- The last man watches "rear"
Any other personnel between the 3rd and rear man (4th or 5th members of a 6-man team etc.) also watch "across" but at different heights, i.e. ground vs. multi-storey windows.

Above: A 4-man and 5-man examples of formation when moving down a street