You see a coworker bypassing a machine safety guard to clear a jam more quickly. What is the BEST action?

Safety guards on mail processing equipment protect workers from serious injuries — caught hands, crushed fingers, lacerations, eye injuries. Bypassing guards (even briefly to 'save time') is a leading cause of serious workers comp injuries at USPS and similar facilities. The exam is screening for: (1) Personal SAFETY INTEGRITY — don't adopt unsafe practices to fit in; (2) Direct COMMUNICATION — many violations are oversight or pressure; direct mention often resolves; (3) ESCALATION when continued — supervisors can reinforce procedures, get the worker training, or address root cause (such as time pressure causing shortcuts); (4) Recognition that team safety violations affect everyone — injuries shut down operations and create burdens for coworkers. 'Do the same' fails because it spreads dangerous practice. Ignoring fails because someone will get hurt. Aggressive confrontation escalates without solving. The consistent USPS exam pattern: speak up + escalate when needed + don't take on safety risks just because peers are.