Dallas May 13, 2019 6:20 pm Dallas to Test ‘Tiered 911 Response' This Summer This summer Dallas will test “tiered 911 response” to save ambulances for more serious calls, after testing, the change may become permanent. Wake Up to Something Good 3:28 Mother mourns loss of son killed in North Texas flooding 1:57 ‘The Wall That Heals' comes to Frisco 1:51 Child killed in Johnson County flooding 0:38 Pet of the Week: Matrix! 2:23 Parents of Fort Worth drive-by shooting victims recalls horrifying moments