For those of you having trouble with the HIGH EXPLOSIVE mission in ECHO and want more details from the previous descriptions, here's a video that really helped.
**If you are in the doorway, DO NOT knife the juggernaut while you are NOT downed, since you have a chance at "lunging" at him and de-positioning yourself from the doorway, allowing the juggernaut/s to come in and kill the healer and/or prevent the healer from safely reviving you. Only knife the enemy when you are in last stand so that you do not move from the doorway (you can get three or four knives before you need to be revived--it is time consuming, so just be patient) Good luck to all on this ridiculous mission!