Air Officer Commanding PAF Academy Risalpur, Air Vice Marshal Hassan Raza, who was the chief guest, inspected guard of honour.
He also laid floral wreath, offered fateha and recorded his impressions in the visitors' book.
Besides hoisting national flag, 71 cadets including women cadets of PAF Academy Risalpur, replaced the guards of Pakistan Navy at Mazar-e-Quaid.
Civil and military bureaucrats, large number of students from different colleges and schools and people from a across sections of the society witnessed the impressive change of guards ceremony.
Defence Day of Pakistan is marked every year on September 6 to pay tribute to the martyred soldiers and Ghazis who successfully defended the homeland in the 1965 Indo-Pak war.
Copyright APP (Associated Press of Pakistan), 2011