The quote for the title is part of the description for episode 10 of this season, Armada: Anyway this makes it sound Bulkhead is not one of the two parties trying to kill Megatron. The only other people that might want him dead are Starscream and Airachnid and only one of them can make it to the Nemesis at this point. I was puzzled by this until the ending of Nemesis Prime. If Silas impersonates Breakdown then perhaps he can get aboard the Nemesis and try to kill Megatron. Thoughts?