Trivan
Registered
Potentially even more stupid reply than normal and I’ve never used a FFS but wonder whether they used duct tape or similar to avoid masks get dislodged in constrictions?
Keeping those masks on and not flooding must have been a significant concern (guessing obviously).
I thought heard on a recent TV hour long recap that the FFM was at positive pressure to lessen the likely hoods of leaks. Not sure it this is true or possible as I have no experience with them.