This is why modern rescue techniques involve direct instruction. For example, if you're providing bandage compression to somebody with a serious arterial wound to the arm, you wouldn't say, "Someone get help!"
The newer technique is to direct a specific person to accomplish a task. "You, in the blue shirt with the yellow tie and briefcase. Call 9-1-1 and tell them we need an ambulance and a police officer at this location immediately." People respond better and faster using that methodology.
~ Blue Jays ~
That is very interesting! And it makes perfect sense.