Astoria in the 21st Century

Some malcreant broke this car window in broad daylight, apparently to steal a GPS module. Yeah, the property value has gone through the roof, but we better prepare for a long, hot summer.
When the population swells in an urban center, so does the number of petty crimes. So say the sociologists anyway.
I am thinking about starting a neighborhood watch on my block. Better we police our selves.
I saw a lot of rookies today. Is it possible to be a police officer but not be old enough to buy a beer?