arlington officers do not yet wear body cameras. so police say they are looking at security video from the car dealership that may give some insight to the cause of the confrontation. taylor's older brother says he didn't deserve to die. >> he's a kid. he's a kid. kids do dumb things sometimes. nobody's life should be taken. >> reporter: ironically a week before his death, taylor tweeted i don't want to die too young. a year ago he wrote i don't feel protected about the police. it sparked a twitter feud on social media as to who is to blame. the police promise a thorough and transparent investigation. mark potter, nbc news. >>> as the u.s. government tries to combat terrorism here at home, it's becoming increasingly concerned about the threat from drones that could be used by terrorists. so over the past two weeks, the military conducted a testing event of what it says are the best counter measures and capabilities available. nbc's kristen welker was there. >> reporter: an unmanned aerial vehicle flying over ventura county, californ

surveillance video shows taylor being tracked through an arlington, texas, car dealership, climbing on cars and at one point jumping on a hood and whipping out the windshield. eventually taylor gets back in his own jeep and rams it through a secured gate and then drives into the dealership show room window. police say there is no video from inside but you can see officers calmly approach. >> suspect locked himself in the bathroom, now causing a disturbance. >> reporter: the police chief says officers ordered taylor to get on the ground but they say he tried to escape through a back door. >> during this arrest there was a confrontation between officers and mr. taylor which led officer brad miller to discharge his weapon. >> reporter: the 49-year-old fired four rounds. miller had just xwrad waited from the police academy in march and was being supervised by a training officer. the training officer fired his taser. >> if this was not justified and authorized under the law, there will be consequences. >> reporter: taylor's family says whatever the circumstances, he didn't deserve to die. >