User blog comment:Crazy sam10/Some thoughts surrounding Ghosts/@comment-71.97.30.156-20140324215800/@comment-1926238-20140530172224

I can answer this easily with a quote from Mosely: "They're Federation, they've broken the truce!" Simply put, the Feds who attack ODIN were on the shuttle under the guise of a crew coming to relieve Mosely's team. Crazy sam10's explanation also helps explain this.