A still image taken from KPRC-TV aerial video footage shows a Harris County Sheriff’s Office High Risk Operations Unit vehicle and a suspect’s vehicle in a standoff at a residential neighborhood following a shooting incident in Spring, Texas July 9, 2014. At least six people were shot to death, including four children, in the Houston suburb of Spring, Texas, on Wednesday, with the suspected gunmen in a standoff with dozens of police after going on a slow-speed chase through residential neighborhoods. REUTERS/KPRC-TV (UNITED STATES – Tags: CRIME LAW TPX IMAGES OF THE DAY) ATTENTION EDITORS – REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE CONTENT OF THIS VIDEO. NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. MANDATORY CREDIT TO KPRC-TV