Agar's Island is an island of Bermuda. Located in the Great Sound, near to the shore of the parish of Pembroke, it was owned by billionaire James Martin, and was historically a secret munitions store, part of the Bermuda Garrison of the British Army. Bermuda had become the primary base, dockyard, and headquarters of the North America and West Indies Squadron of the Royal Navy following the independence of the USA. The British Army had consequently garrisoned and heavily fortified the colony.