that's all i have left is pain. >> reporter: mildred johnson has three sons.aurice a, a former tight end for the philadelphia eagles. he's in the pharmaceutical business today. shawn, a longtime employee for "the washington post." he's been there more than 20 years. but the son she thinks about every day, that's marcus, her baby boy. >> that's the son that looks so much like me. that's the son that, if i'm sick, the other two would back away. not him. >> reporter: marcus didn't have a fast track to success. when he was 16, he got involved selling drugs. he shot a guy who didn't pay up. he did time, four years time. >> according to the youth center on bladenburg road, i did, because he had to stand up and take responsibility for what he did. >> reporter: when he was 26, marcus got lucky and landed a job at the washington hospital center. he was a patient transporter there. >> when you got there, it seems like he had made peace with the world. he wanted to just be able to be a productive person. >> reporter: marcus johnson worked that hospital job for nine years