User blog comment:IceFireWarden0/Speculations for Season 11/@comment-5259531-20130617231941/@comment-198.45.201.206-20130619031248

"Something" could be one of two possible antagonists or threats to the teams:

1.  A completely brand new antagonist(s) who, for an unknown reason, attacks the teams, possibly for supplies from the wreckage, or simpily for "the fun of it."

2.  (Possibly) Maine or a similar character who seeks nothing but revenge against the teams. Other possible characters could be Insurrection remnants, who want payback for the Leader's failed mission, the pilot from Season 10 Reckless, who may have Doc hostage and may start the vehicle joke again, or UNSC mercenaries of some sort who wish to "fulfill a cancelled bounty on their heads."