They went to the same as Optimus Prime's trailer and Voyager's shuttle supply
Isn't this the reason that they added the "Are you starfleet or private security" line? So that we wouldn't be worrying about them when they explode.
I thought this was to further emphasize the sneakiness of Marcus' plan. That he couldn't bring on star fleet regulars... he needed paid muscle that didn't need to think, just obey.