Top commanders of the Indian Air Force (IAF) are meeting here in a three-day conference that started on Monday.Inaugurated by Minister of State for Defence Rao Inderjit Singh, the commanders' conference will discuss key operational and organisational issues of the IAF, which is presently down to 33 operational squadrons.The sanctioned strength of the IAF at present is 39.5 squadrons, which is sought to be raised to 42.The conference is expected to discuss induction into the force of Tejas light combat aircraft. Also on the agenda is the security of air bases in light of the terrorist attack in January on the Pathankot airbase and the security audit that was undertaken after that.The Air Force commanders' conference is held twice a year.More conferences of the commanders of the armed forces are scheduled this month: Navy's on April 21 and Army's from April 25 to 30.