Small flames could be seen igniting at the base of the engines before they quickly disappeared The rocket remained still. With favorable weather conditions, Saturday’s launch was originally slated for 8:06 p.m., but a brief stop in the countdown to troubleshoot a problem pushed the liftoff back to 8:15 p.m., the company said. All systems were “go” until the countdown was halted just seven second before liftoff after a problem was detected, ULA said. The attempt was cancelled for the night, but it was not clear when ULA will try again. ULA is working in conjunction with the Air Force’s...