1868 Tribune News Service New Delhi, July 11 The investigation into the Jammu Air Force Station drone attack has revealed that the technique of “pressure fuse” used in the bombs indicates the role of Pakistan army or the ISI in helping the Lashkar-e-Toiba in fabricating the IEDs, sources in the probe agency said. First-of-its-kind terror strike June 27: Two blasts rock the IAF base in Jammu, injuring two IAF personnel 1.37 am: The first blast rips off concrete roof of a single-storey building in technical area of airport manned by Indian Air Force 1.42 am: Another bomb explodes in an open area Impact needed to trigger device, used in minefields