New Delhi, May 9 (Reporter) The Directorate of Civil Defence on Friday will test the air raid sirens installed at the PWD Headquarters, ITO at 3 pm. According to a Delhi government statement, the siren will be carried out for 15-20 minutes and general public has been adviced not to panic during the exercise. “The testing will commence at 3pm and will be carried out for 15-20 minutes,” the statement said. "Accordingly it is requested that adequate publicity may be made through social and electronic media so that general public are advised to stay calm and not to panic during the said exercise," the statement added...////...