I was with the 845 flight on Fort Austin when she left Ascension for the first time in early April, going south to meet Endurance, and for a while afterwards.
I remember some of the weapons being transferred to us at sea but I can't remember which ships they came from, sorry.
I do remember that people were very concerned about who was watching the transfer, with all non essential staff being kept off the upper decks.
I also remember the containers bouncing off the ships a bit which caused some consternation !