The Balakot airstrike, carried out by the Indian Air Force, marked its fourth anniversary on Sunday. It was a "punitive strike" on a JeM facility in Pakistan's Khyber Pakhtunkhwa region. It was code-named 'Operation Bandar' to confuse Pakistan into thinking the reference was to the JeM HQ in Bahawalpur, where ailing chief Masood Azhar was safely housed, top officials said.