Edited sentence: Brar addressed the soldiers:.However, no one opted out and that included many "Sikh officers, junior commissioned officers and other ranks".Just before the commencement of the operation, K.The bombing remains the largest mass killing in Canadian history, and was also the world's most destructive act of aviation terrorism before the 9/11 attacks led by Al-Qaeda.The movement is linked with Sikh terrorism and pro-Khalistan terror groups such as Babbar Khalsa and International Sikh Youth Federation