NBC February 1, 2018 11:35 pm New Details Emerge in July 2016 Dallas Police Ambush For the first time, a Dallas SWAT officer is talking publicly about the life-or-death firefight with the man who killed five police officers in the July 7, 2016, ambush. US & World Videos 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 1:59 TikTok's Maddy Baloy dead at 26: Gordon Ramsay and Tay Lautner pay tribute 3:04 Progress being made on demolition of overpass on I-95 in Norwalk 2:58 Demolition begins on I-95 after explosion in Norwalk