hey i found this glitch in fireteam and its pretty helpful
if your there at that spot for a while XD
ok first you run into the wall
by knifing and keep doing it for several seconds
and.....
Edit: its on the other side of tank in the wall
BAM YOUR IN!
[IMG]https://i696.photobucke*****m/albums/vv322bot8/Combat-Arms_05-1.jpg[/IMG]
[IMG]https://i696.photobucke*****m/albums/vv322bot8/Combat-Arms_04-1.jpg[/IMG]