"Mark! He's here!" Trey shouted, slowly running out of breath. "Keep running! Don't stop!" Mark shouted urgently. His focus on getting out of the dark alley had blinded his attention to his best friend who laid still in his own pool of blood. Trey's been shot and Mark won't realize it until he himself is safe.
I know its two-sentence but I'm either extra or inexperienced. Ha!