What signs might indicate impending trouble while patrolling in a jail?

High tensions and unusual commissary activity are significant indicators of impending trouble while patrolling in a jail. These signs suggest that inmates may be experiencing conflicts or stress that could lead to violent outbursts or collective unrest. Unusual activities in the commissary, such as an unexpected spike in purchases or specific item requests, can indicate that inmates are preparing for a confrontation or trying to forge alliances. Additionally, heightened tension among inmates can signal that disputes are escalating and may need to be closely monitored to prevent incidents.

While other options may seem relevant, they do not directly correlate with immediate signs of unrest. Increased visitor activity might simply mean that family members are engaging with inmates, frequent phone calls could be part of regular communication routines, and offers of cooperation from inmates might indicate compliance rather than distress. Therefore, the combination of high tensions and unusual commissary activity stands out as the most telling signs of potential trouble in a jail setting.