Actually, #2 would be MUCH better if blue unit reversed itself and watched the rear once it secured the corner. Red unit arcing out and away from the corner gives him ample room to manuever his long arm and to fall back. Taking corners you don't want to be right up against it; you'd be better at least a couple feet away from it so that you can "pop" out and lay down fire if needed. Also, #2 gives red unit the perfect vantage if there are any doors on the right of the adjacent hall, or anymore corners. So that during their push up this hall, their fields are covering each other and making sure all doors there may be are covered. There is still a lot of their backs being left exposed here.
Sweep teams usually consist of four men, and that is where a lot of the back being left exposed here is coming from. Someone should always be watching the rear.
"The hydrogen economy car from the people who brought you the 'Hindenburg
'" - Glen Foster
Condoms do not guarantee safe sex any more. A friend of mine wore one and was shot by the woman's husband!