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— Photo by Joe Careccia

Saving a life: Kyle Haines, kneeling, does chest compressions on a man who collapsed at the airport in Baltimore, as a Transportation Security Administration agent checks his pulse. Haines and the TSA agent switched off doing chest compressions until emergency medical services arrived. “He was cool as a cucumber,” said Joe Careccia, who works with Haines at a company that produces fire-training structures and who took this picture. “I was impressed by him. I know him pretty well, but I had never seen him in action.”