I don't think a riot call out is a realistic one as a common call out and would be hard to implement as to what to do. Realistically it would be a non shoot scenarios with crowd control that would be pointless in game. A realistic daily call out would involve burglaries (breaking and entering), robberies, thefts, stolen vehicles, pursuits in progress, carjackings, home invasions, car crashes (which may be pointless, but could implement citizen contacts that result in tickets or searches), drunk driver calls, domestics, fights, escaped prisoners/warrant service, suspicious people/vehicles, prostitution, drug offenses etc. It would be also nice to see different levels of resisting suspects. From compliance, to runnings away, to hand fighting, to weapon shootouts. The more desperate suspects may also attempt to carjack inncocent drivers if on foot, to get away, but not all the time.