What is a strategic consideration regarding verbal commands, other than loudness, to maximize the likelihood of attracting assistance in a public setting?

A strategic consideration regarding verbal commands, other than loudness, to maximize the likelihood of attracting assistance in a public setting is using 'specific, actionable requests directed at individuals'. Instead of shouting general phrases like 'Help!' or 'Call the police!', which can lead to the bystander effect (where everyone assumes someone else will act), directly address individuals with specific instructions, such as 'You in the blue shirt, call 911!' or 'You with the phone, record this!'. This direct engagement assigns responsibility and overcomes the diffusion of responsibility that often prevents people from intervening in a public emergency, significantly increasing the chances that someone will take action and provide assistance.