The report stated, (empasis on "patrols" added by me:
not in response to reports of major crimes, but instead for transportation, ceremonial trips or patrols.
Typically law enforcement helicopters will just patrol random areas, (focused on high crime areas, when not on an active call. Think about a patrol car---if there is no crime he is working on, does he go back and sit in the station? Nope, he drives around. When I flew LE we had to fly an average of 6 hours flight time per shift, so we just flew around, occasionally circling areas, and lighting up businesses at night if for no other reason but to show a presence and act as a random deterrent.