AlQa'dah 1, 1435, Aug 27, 2014, SPA -- New counter-terrorist units are operating at Sydney and Melbourne airports, dpa cited Australian Prime Minister Tony Abbott as saying Wednesday. "I am advised that these new units have already intercepted at least one person of interest," Abbott told parliament, giving no further details. The units began operating last week and an additional 80 border-force officers would be deployed at other major airports, he said.