Milt flew with 403 City of Calgary Squadron, RCAF for a number of years. In 1960 Lynn Garrison, also a pilot with 403 Squadron, obtained the contract to ferry 75 P-51 Mustang aircraft, retired from RCAF service, to their new owners in New York City. Milt Harradence would take time off from his law practise to accompany Garrison on the trips. Flying without radios, most of the time, they navigated by following the CPR railroad tracks eastward. Some of the flights were very exciting. He and Garrison acquired two Mustangs as part of their compensation and registered them as CF-LOR and CF-LOQ, the first of their type registered in Canada. Harradence loved to do low-level aerobatics and participated in many airshows across Canada and the United States. He and Garrison had a long-term relationship with the founders of the Confederate Air Force in Texas. Milt would trade his Mustang for a DeHavilland Vampire jet, obtained from New York by Garrison. This would be traded for Garrison's Canadair F-86 which Harradence flew as CF-AMH, for a short time, before retiring from the aviation game in 1967.