Security in Pandora has not been an issue for many years. When crime was an issue, an automated, hidden task force was deployed. If a fight broke out, gun shots were fired, or someone was being mugged, canisters of gas were deployed from the ceilings and everyone was put to sleep. They would awake ten minutes later and the situation would be resolved; all participants in the violence vanished, never to be seen again. It didn’t take long before fights, gun shots, and muggings became non-existant. If anyone is doing these things, they’re certainly very careful about it.
The security system has not been activated in over 20 years. Some have their doubts that it even exists anymore, suggesting that the system was dismantled by a creator who was afraid his machines would turn on him. Interestingly enough, that creator, William Sleape, has held a seat in government since the day his security force was implemented. This is the longest standing incumbent the government has ever seen.