. >> january 4th, 2015, officer ben luna, a 16-year veteran of the duncanville, texas, police department is on traffic duty when a call comes over his radio. >> 911, location of the emergency? >> yes, ma'am, i'm here at the 67th on this 7-eleven are walking around here and they just walked across the street. these young boys walking around and he is wearing green pants. >> does he have a gun? >> he has got a big gun. >> and i see that the suspects have on the described clothes. and i see him with the movement to the waistband. at that time i stop my car, and come out with loud verbal commands. when you are dispatched to the subject with a handgun, the stakes are so much higher. >> none of the suspects follows the command. i don't care, get on the ground. >> the subject with the gray the sweater is walking towards me. as i am looking at the other two teens, they are making movements to the pocket, and at that time, i don't know if there are multiple weapons involved, and i am giving the loud verbal command, and hands up, stop, stop. >> but the suspect in gray does not stop. he is saying t

. >> january 4th, 2015, officer ben luna, a 16-year veteran of the duncanville, texas, police departmentduty when a call comes over his radio. >> 911, location of the emergency? >> yes, ma'am, i'm here at the 67th on this 7-eleven are walking around here and they just walked across the street. he has on green pants and gray hoodie. >> does he have a gun? >> he has got a big gun. >> i start heading that way. as soon as i make the right turn, maybe not even half a block i see teenagers matching the description. the subject with the handgun was wearing great sweater and my eyes were focused on him. as i pull up, he looks back and makes a movement towards his waistband. at that time i stop my car, and come out with my hand gun drawn and give loud verbal commands. when you are dispatched to the subject with a handgun, the stakes are so much higher. >> none of the suspects follows the commands. i don't care, get on the ground. >> the subject in the gray sweater is walking towards me. as i am looking at the other two teens, they are making movements to the pocket, and at that time, i don't know