Left to themselves, things tend to go from bad to worse. After things have gone from bad to worse, the cycle will repeat itself. Nature always sides with the hidden flaw. It is impossible to make anything foolproof, because fools are so ingenious. If the enemy is in range, so are you .
Incoming fire has the right of way.
Don't look conspicuous, it draws fire. There is always a way. The easy way is always mined. Try to look unimportant, they may be low on ammo. Professionals are predictable, it's the amateurs that are dangerous.