A day after their news crew was shot dead live on air, presenters at a US local TV station were back on screen with memories, tears and a determination to carry on.<br /><br /> 24-year-old Alison Parker and 27-year-old Adam Ward were gunned down during an interview by disgruntled former colleague Vester Flanagan.<br /><br /> He later died from gunshot wounds.<br /><br /> The two colleagues worked closely together.<br /><br /> The gun control debate<br /><br /> Alison Parker’s father Andy says the time has come for tighter controls on firearms:<br /><br /> “The politicians have got to stand up to the NRA and close some of these loopholes so that crazy people don’t get guns. I am sure that the reaction from some of these wing nuts is going to be, ‘well, you know, if she had a handgun with her, this would never have happened’. She could have had an AK-47 strapped around her waist, she could not have seen this coming. There are just too many guns in the hands of crazy people.”<br /><br /> Locals brought flowers and food to the WDBJ7 studio.<br /><br /> Tributes have
