Waiheke's popularity as a summer and weekend resort area has led to a growing number of holiday homes and cottages. These properties are often left unattended for extended periods of time and are a temptation for thieves. Burglaries and car thefts are the island's biggest problems. Some marijuana is grown on the island, but not as much as in the 1970's. The police station has two holding cells; arrestees are taken by police launch to Auckland. The two patrol officers carry no personal weapons, but firearms are kept locked in the police station. The two officers undergo firearms training at least once a year. They operate early and late shifts, 8 a.m. to 4 p.m. and 3 p.m. to 11 p.m. Neighborhood Watch groups operate at various levels of activity. Waiheke's Transport Department has a resident traffic officer who enforces road codes.