Here is an interesting comparison of Cortana over the course of the 4 halo games:
PTesh adds his dulcet prepubescent tones over the top of one of the new trailers for weapons...
Try upgrading your browser to Google chrome (you wont regret it). There is probably an IE...
Energy Sword Grunts
Level: Delta Halo
Start on delta halo. Continue the level normally until you get to the tank part. Once you get to the part when a pelican drops supplies, head up the ramp on the left side when you come out of the preivious area. A large block will be blocking a doorway. use grenades or rockets (rockets work better) and the block will eventually move out of the way. There will be 2 dead grunts with energy swords lying next to them.