I think the military is involved strictly because they are good at the logistics of huge operations.
They’re certainly not there for security. At least I hope not... that definitely sends the wrong message.
The team -- including operational planners, pharmacists, health-care administrators, engineers, and IT experts -- has been in place for months, quietly planning for the rollout.
The military says it is helping to “synchronize” vaccine deliveries and the requirement for cold storage, putting in place “risk-mitigation tools” and conduct “a series of exercises” ahead of vaccines being administered to all corners of the country.
https://www.ctvnews.ca/health/coronavirus/meet-the-military-general-in-charge-of-canada-s-mass-covid-19-vaccination-effort-1.5207985