shopping centre.Pauline Lloyd was left 'shaken' as she watched her one-year-old Aled begin to choke as the pair had lunch at Costa in Glasgow's Silverburn centre.The 34-year-old engineer from Glasgow went into 'panic mode' as the tot struggled for breath as other shoppers watched on.But brave security guard Gordon Park was on hand and immediately launched into action on the February 16 incident.Gordon took the tot and gave firm slaps to the back which dislodged a ball of mucous as they awaited