like a product or food
fish , beaver
All I know is that halo movie comes out next yeah (can't wait) along with halo 4 in the winter (also can't wait) and that bungie are sendin Microsoft and 343 indestries secret documents and that the planet master chief was heading to in the trailer is a forerunner planet and the forerunners created the halos to destroy the flood billions of years before and trains the first Spartans. Also halo 4 contains the halo reach multiplayer online and any kind of forge is not yet official.so yeah possible chief may come across forerunners and old Spartans which would be pretty cool. And the forerunners created the sentinels and used them to build there civilization then the flood invaded and they had to kill themselves to activate the halos and wipe the university whilst keeping two of every species alive . Hope this helps