Children of Erebus
Due to concerns about the Children of Erebus's possible attempt to take Medusa, a nuclear weapons platform newly devised by the Colonial Fleet, Therion and the Ghost Squadron are ordered to Aquaria to provide security during the test on Day Zero of the Fall.
During this, Captain Arvin Tyler and Ronnie Dyson, civilians engaged in theft and other illegal operations, steal a truck full of highly valued medical supplies under the guise of being members of this organization. Due to this, they are flagged as being terrorists, and later intercepted by the Ghosts, who leave them to their own devices upon hearing word of the attacks.
Before the attack, two members of the Children of Erebus, Peter Gilmour and his brother, board Orion and leave Aquaria, holding Tyler at gunpoint upon hearing of the heist and after the Cylon attack begins (Battlestar Galactica: Ghosts 1).