Incoming fire has the right of way. No combat ready unit has ever passed inspection. Things that must be together to work, usually can't be shipped together. Radio will fail as soon as you need fire support desperately. Anything you do can get you shot- including doing nothing.
Tracers work both ways.
The only thing more accurate than incoming enemy fire is incoming friendly fire. Make it tough for the enemy to get in and you can't get out. If you take more than your fair share of objectives, you will have more than your fair share of objectives to take. When in doubt, empty your magazine 20. Never forget your magazine was made by the lowest bidder Real Soldier Lies 1.