Bob Grandin joined the RAAF College at Point Cook in 1957. After graduation he went to East Sale and The School of Air Navigation to fly DC3 flying classrooms before transferring in 1963 to Richmond and No 11 Maritime Reconnaissance Squadron in P2V Neptunes. In 1966 he volunteered to transfer to No 9 Sqn and train on Iroquois helicopters. This led to a transfer to Vietnam in June 1966 when the First Task Force was established at Nui Dat. Within weeks he was involved in the Battle of Long Tan, both with the ammunition resupply and the midnight evacuation of wounded. Following his 12 months in Vietnam he returned to Australia before being posted to The Transport Support Flight flying DC3s out of Butterworth in Malaysia throughout South-East Asia. His final posting was back to the now RAAF Academy at Point Cook as a Flight Commander. He completed a Bachelor of Science during this time and chose to resign his commission and follow an education pathway teaching , innovating and researching within the realm of unsettled young people in schools.