If the enemy is within range, so are you. Beer math is 2 beers x 37 men - 49 cases. Friendly fire isn't. Anything you do can get you shot, including doing nothing. Make it tough for the enemy to get in, and you can't get out.
Tracers work both ways.
The only thing more accurate than incoming enemy fire is incoming friendly fire. If you take more than your fair share of objectives, you will have more than your fair share to take. Both sides are convinced they are about to loose. Both sides are right. Professionals are predictable, but the world is full of amateurs.