Hello Andy,
At the time of his enlistment in the RAAF (14/9/1940), Triggs was employed by the National Bank as a Bank Clerk in their Prahran (Victoria), Branch. One fact you won't find in Trigg's papers, is mention of him Ferrying a Hudson from Dorval to the UK. Not sure of the exact date, but sometime between 17/12/1941- 9/1/1942 (subject to correction).
You might find the following photos/captions useful:
https://www.awm.gov.au/collection/SUK10442/
https://www.awm.gov.au/collection/SUK10657/
https://www.awm.gov.au/collection/ART27651/
Col.